HomeAway 8-K/A 15 Dec 15 Financial Statements and Exhibits Financial data

Document and Entity Information

Document and Entity Information	9 Months Ended
	Sep. 30, 2015
Document And Entity Information [Abstract]
Document Type	8-K/A
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Trading Symbol	AWAY
Entity Registrant Name	HOMEAWAY INC
Entity Central Index Key	1,366,684
Entity Filer Category	Large Accelerated Filer

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 301,293	$ 292,325	$ 324,608
Short-term investments	618,343	520,844	66,798
Accounts receivable, net of allowance for doubtful accounts of $633 and $663 as of September 30, 2015 and December 31, 2014, respectively	24,019	23,189	20,375
Income tax receivable	1,680	1,900	3,340
Prepaid expenses and other current assets	18,269	17,913	9,309
Deferred tax assets	9,384	8,774	8,146
Total current assets	972,988	864,945	432,576
Property and equipment, net	60,773	56,173	39,807
Goodwill	460,049	493,671	507,611
Intangible assets, net	58,003	70,456	80,665
Non-marketable investments	39,549	35,285	10,112
Deferred tax assets	880	1,545	1,120
Other non-current assets	6,295	8,053	8,781
Total assets	1,598,537	1,530,128	1,080,672
Current liabilities:
Accounts payable	7,487	8,281	3,539
Income tax payable	907	1,344	1,992
Accrued expenses	50,446	50,255	54,625
Deferred revenue	193,769	170,522	151,991
Total current liabilities	252,609	230,402	212,147
Convertible senior notes, net	329,905	316,181
Deferred revenue, less current portion	2,981	3,179	2,983
Deferred tax liabilities	24,376	26,624	24,046
Other non-current liabilities	19,817	12,192	7,557
Total liabilities	629,688	$ 588,578	$ 246,733
Commitments and contingencies
Redeemable noncontrolling interests	9,033	$ 9,742	$ 10,584
Stockholders' equity
Common stock	10	9	9
Additional paid-in capital	1,076,292	1,022,586	908,632
Accumulated other comprehensive loss	(60,608)	(28,053)	(6,747)
Accumulated deficit	(55,878)	(62,734)	(78,539)
Total stockholders' equity	959,816	931,808	823,355
Total liabilities, redeemable noncontrolling interests and stockholders' equity	$ 1,598,537	$ 1,530,128	$ 1,080,672

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Accounts receivable, Allowance for doubtful accounts	$ 633	$ 663	$ 1,038
Common stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Common stock, shares authorized	350,000,000	350,000,000	350,000,000
Common stock, shares issued	96,162,374	94,515,344	92,361,069
Common stock, shares outstanding	96,162,374	94,515,344	92,361,069

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue:
Listing	$ 106,484	$ 96,601	$ 301,281	$ 278,459	$ 371,939	$ 294,661	$ 238,413
Other	24,198	20,511	74,272	58,591	74,823	51,828	41,991
Total revenue	130,682	117,112	375,553	337,050	446,762	346,489	280,404
Costs and expenses:
Cost of revenue (exclusive of amortization shown separately below)	19,361	16,926	58,472	50,291	67,612	54,638	45,342
Product development	22,058	20,212	65,235	56,952	77,082	58,226	43,152
Sales and marketing	42,963	42,234	143,850	117,251	154,995	112,967	93,366
General and administrative	23,874	22,995	72,115	69,467	93,131	75,169	56,311
Amortization expense	2,819	3,397	8,713	10,163	13,916	11,668	12,438
Total costs and expenses	111,075	105,764	348,385	304,124	406,736	312,668	250,609
Operating income	19,607	11,348	27,168	32,926	40,026	33,821	29,795
Other income (expense):
Interest expense	(4,718)	(4,373)	(13,971)	(8,842)	(13,333)
Interest income	927	552	2,426	1,117	1,728	1,211	928
Other expense, net	(338)	(1,434)	(633)	(6,452)	(7,182)	(6,017)	(2,587)
Total other income (expense)	(4,129)	(5,255)	(12,178)	(14,177)	(18,787)	(4,806)	(1,659)
Income before income taxes	15,478	6,093	14,990	18,749	21,239	29,015	28,136
Income tax expense	(5,625)	(845)	(9,757)	(5,909)	(7,272)	(11,724)	(13,175)
Net income	9,853	5,248	5,233	12,840	13,967	17,291	14,961
Less: Impact of noncontrolling interests, net of tax	(564)	336	(709)	(382)	583	(395)
Net income attributable to HomeAway, Inc.	$ 10,417	$ 4,912	$ 5,942	$ 13,222	$ 13,384	$ 17,686	$ 14,961
Net income per share attributable to HomeAway Inc.:
Basic	$ 0.11	$ 0.05	$ 0.06	$ 0.14	$ 0.14	$ 0.21	$ 0.18
Diluted	$ 0.11	$ 0.05	$ 0.06	$ 0.14	$ 0.14	$ 0.20	$ 0.18
Weighted average number of shares outstanding:
Basic	95,716	94,106	95,162	93,507	93,727	85,378	82,382
Diluted	97,688	96,389	97,389	96,358	96,481	88,259	84,942

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 9,853	$ 5,248	$ 5,233	$ 12,840	$ 13,967	$ 17,291	$ 14,961
Other comprehensive income (loss):
Foreign currency translation adjustments (net of tax)	(19,823)	(14,793)	(29,024)	(6,463)	(20,524)	(1,198)	767
Unrealized gain (loss) on short-term investments (net of tax)	209	(491)	618	(642)	(782)	(99)	263
Defined benefit pension plan adjustments	96		(4,149)
Total other comprehensive income (loss), net of tax	(19,518)	(15,284)	(32,555)	(7,105)	(21,306)	(1,297)	1,030
Less: Comprehensive loss attributable to noncontrolling interests	(655)	(515)	(1,623)	(1,233)	(1,802)	(395)
Currency translation adjustments attributable to noncontrolling interests		12		29
Comprehensive income (loss) attributable to HomeAway, Inc.	$ (9,010)	$ (9,509)	$ (25,699)	$ 6,997	$ (5,537)	$ 16,389	$ 15,991

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
Beginning Balance, value at Dec. 31, 2011	$ 441,009	$ 8	$ 558,667	$ (6,480)	$ (111,186)
Beginning Balance, shares at Dec. 31, 2011		80,685,000
Issuance of stock under Company plans, net of shares withheld for taxes, value	25,878		25,878
Issuance of stock under Company plans, net of shares withheld for taxes, shares		2,756,000
Stock-based compensation	27,033		27,033
Excess tax benefits related to employee stock options	7,122		7,122
Other comprehensive income (loss)	1,030			1,030
Net income (loss) attributable to HomeAway, Inc.	14,961				14,961
Ending Balance, value at Dec. 31, 2012	517,033	$ 8	618,700	(5,450)	(96,225)
Ending Balance, shares at Dec. 31, 2012		83,441,000
Issuance of stock under Company plans, net of shares withheld for taxes, value	48,473	$ 1	48,472
Issuance of stock under Company plans, net of shares withheld for taxes, shares		3,420,000
Stock-based compensation	37,887		37,887
Issuance of common stock in connection with follow-on offering, net of offering costs, value	195,347		195,347
Issuance of common stock in connection with follow-on offering, net of offering costs, shares		5,500,000
Excess tax benefits related to employee stock options	8,226		8,226
Other comprehensive income (loss)	(1,297)			(1,297)
Net income (loss) attributable to HomeAway, Inc.	17,686				17,686
Ending Balance, value at Dec. 31, 2013	$ 823,355	$ 9	908,632	(6,747)	(78,539)
Ending Balance, shares at Dec. 31, 2013	92,361,069	92,361
Issuance of stock under Company plans, net of shares withheld for taxes, value	$ 25,386		25,386
Issuance of stock under Company plans, net of shares withheld for taxes, shares		2,154
Stock-based compensation	48,518		48,518
Equity component of convertible note issuance, net	87,303		87,303
Purchase of convertible note hedge	(85,853)		(85,853)
Sale of warrants	38,278		38,278
Excess tax benefits related to employee stock options	2,743		2,743
Other comprehensive income (loss)	(21,306)			(21,306)
Net income (loss) attributable to HomeAway, Inc.	13,384		(2,421)		15,805
Ending Balance, value at Dec. 31, 2014	$ 931,808	$ 9	1,022,586	(28,053)	(62,734)
Ending Balance, shares at Dec. 31, 2014	94,515,344	94,515,344
Issuance of stock under Company plans, net of shares withheld for taxes, value	$ 9,640	$ 1	9,639
Issuance of stock under Company plans, net of shares withheld for taxes, shares		1,647,000
Stock-based compensation	37,487		37,487
Excess tax benefits related to employee stock options	7,494		7,494
Other comprehensive income (loss)	(32,555)			(32,555)
Net income (loss) attributable to HomeAway, Inc.	5,942		(914)		6,856
Ending Balance, value at Sep. 30, 2015	$ 959,816	$ 10	$ 1,076,292	$ (60,608)	$ (55,878)
Ending Balance, shares at Sep. 30, 2015	96,162,374	96,162,374

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities
Net income	$ 5,233	$ 12,840	$ 13,967	$ 17,291	$ 14,961
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	16,204	12,091	16,926	13,399	11,051
Amortization of intangible assets	8,713	10,163	13,916	11,668	12,438
Amortization of debt discount and transaction costs	13,764	8,720	13,176
Amortization of premiums on securities and other	8,683	4,288	7,212	4,030	2,409
Stock-based compensation	37,487	35,582	48,518	37,887	27,033
Excess tax benefit from stock-based compensation	(8,161)	(2,583)	(3,092)	(8,226)	(7,122)
Deferred income taxes	(1,368)	(435)	(1,664)	(1,455)	(3,119)
Net unrealized foreign exchange loss (gain)	15,564	(6,057)	6,183	2,450	817
Realized loss (gain) on foreign currency forwards	(15,081)	12,011	328	2,926	1,910
Changes in operating assets and liabilities, net of assets and liabilities assumed in business combinations:
Accounts receivable	(2,172)	(2,591)	(3,625)	(1,790)	251
Income tax receivable	(426)	(1,590)	571	(2,506)	(672)
Prepaid expenses and other assets	(2,519)	(4,938)	(4,386)	878	(6,987)
Accounts payable	1,151	6,668	2,491	(3,348)	3,376
Accrued expenses	1,748	(3,394)	241	11,081	4,457
Income tax payable	7,087	1,272	2,305	(1,006)	11,486
Deferred revenue	29,667	25,392	27,222	21,219	22,401
Other non-current liabilities	3,520	3,976	5,075	(136)	713
Net cash provided by operating activities	119,094	111,415	145,364	104,362	95,403
Cash flows from investing activities
Acquisition of businesses, net of cash acquired		(17,847)	(17,847)	(205,470)	(16,207)
Change in restricted cash	122	166	(501)	(492)	773
Purchases of intangibles and other assets	(278)	(303)	(473)	(625)	(251)
Purchases and sales of non-marketable investments	(3,866)	(10,135)	(25,148)	(3,667)	(6,446)
Purchases of short-term investments	(379,387)	(473,331)	(575,606)	(129,782)	(57,080)
Proceeds from maturities and redemptions of marketable securities	272,022	23,048	109,516	46,679	40,406
Proceeds from sales of marketable securities	1,525	4,358	4,358	92,527
Net settlement of foreign currency forwards	15,081	(12,011)	(328)	(2,926)	(1,910)
Purchases of property and equipment	(23,792)	(20,456)	(31,647)	(19,616)	(17,260)
Net cash used in investing activities	(118,573)	(506,511)	(537,676)	(223,372)	(57,975)
Cash flows from financing activities
Repurchase of redeemable noncontrolling interests			(1,461)
Proceeds from borrowings on convertible senior notes, net		390,978	390,978
Proceeds from issuance of warrants		38,278	38,278
Purchase of convertible note hedge		(85,853)	(85,853)
Other financing activities		(919)	(919)
Proceeds from exercise of options to purchase common stock	9,640	22,827	25,386	48,473	25,878
Proceeds from follow-on offering, net of offering costs				195,348
Excess tax benefit from stock-based compensation	8,161	2,583	3,092	8,226	7,122
Net cash provided by (used in) financing activities	17,801	367,894	369,501	252,047	33,000
Effect of exchange rate changes on cash	(9,354)	(5,303)	(9,472)	2,093	842
Net increase (decrease) in cash and cash equivalents	8,968	(32,505)	(32,283)	135,130	71,270
Cash and cash equivalents at beginning of period	292,325	324,608	324,608	189,478	118,208
Cash and cash equivalents at end of period	301,293	292,103	292,325	324,608	189,478
Cash paid for interest	503	253	253
Cash paid for taxes, net of refunds	2,091	3,727	1,385	13,841	9,105
Supplemental disclosure of non-cash activities
Changes to accrued capital expenditures	2,455		2,403	$ 317	$ 541
Changes to redemption value of noncontrolling interests	$ 914	$ 851	$ 2,421

Description of Business

Description of Business	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Description of Business	1. Description of Business HomeAway, Inc. (the “Company”) operates an online vacation rental property marketplace that enables property owners and managers to market properties available for rental to vacation travelers who rely on the Company’s websites to search for and find available properties. Property owners and managers pay listing fees to provide detailed listings of their properties on the Company’s websites and reach a broad audience of travelers seeking vacation rentals. Listing fees are typically annual subscriptions or payments on a performance basis, based on bookings or inquiries made by travelers to property owners and managers. A listing includes published detailed property information, including photographs, descriptions, location, pricing, availability and contact information. The Company also sells, directly or through third parties, complementary products, including travel guarantees, insurance products and property management software and services. Travelers use the network of websites to search for vacation rentals meeting their desired criteria, including location, size and price. Travelers that find properties meeting their requirements through the Company’s marketplace are able to make reservations online or contact property owners and managers directly by phone or through form-based communication tools on the Company’s websites. The Company is a Delaware corporation headquartered in Austin, Texas.	1. Description of Business HomeAway, Inc. (the “Company”) operates an online vacation rental property marketplace that enables property owners and managers to market properties available for rental to vacation travelers who rely on the Company’s websites to search for and find available properties. Property owners and managers pay listing fees to provide detailed listings of their properties on the Company’s websites and reach a broad audience of travelers seeking vacation rentals. Listing fees are typically annual subscriptions or payments on a performance basis, based on bookings or inquiries made by travelers to property owners and managers. A listing includes published detailed property listings, including photographs, descriptions, location, pricing, availability and contact information. The Company also sells, itself or through third parties, complementary products, including travel guarantees, insurance products and property management software and services. Travelers use the network of websites to search for vacation rentals that meet their desired criteria, including location, size and price. Travelers that find properties that meet their requirements through the Company’s marketplace are able to make reservations online or contact property owners and managers directly by phone or through form-based communication tools on the Company’s websites. The Company is a Delaware corporation headquartered in Austin, Texas.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Basis of Presentation The accompanying condensed consolidated financial statements include the accounts of HomeAway, Inc. and its wholly and majority-owned subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP, for interim financial reporting and applicable quarterly reporting regulations of the Securities and Exchange Commission, (the “SEC”). All significant intercompany transactions and balances have been eliminated in consolidation. In the opinion of the Company’s management, the accompanying interim unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments, consisting of normal recurring adjustments and those items discussed in these notes, necessary for a fair statement of the Company’s financial position, as of September 30, 2015 and December 31, 2014, results of operations for the three and nine months ended September 30, 2015 and September 30, 2014, comprehensive income (loss) for the three and nine months ended September 30, 2015 and September 30, 2014, cash flows for the nine months ended September 30, 2015 and September 30, 2014, and changes in stockholders’ equity for the nine months ended September 30, 2015. Certain information and disclosures normally included in the notes to the annual financial statements prepared in accordance with GAAP have been omitted from these interim condensed consolidated financial statements pursuant to the rules and regulations of the SEC. Accordingly, these unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014. Operating results for this interim period are not necessarily indicative of the results that may be expected for the year ending December 31, 2015, or for any other period. Business Segment The Company has one operating segment consisting of various products and services related to its online marketplace of accommodation rental listings. The Company’s chief operating decision maker is the Chief Executive Officer. The chief operating decision maker allocates resources and assesses performance of the business and other activities at the single operating segment level. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements; and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates. These differences could have a material effect on the Company’s future results of operations and financial position. Significant items subject to estimates and assumptions include certain revenues, traveler guarantees, the allowance for doubtful accounts, marketable and non-marketable investments, goodwill and other indefinite-lived intangible assets, definite-lived intangible assets, depreciation and amortization, stock-based compensation, deferred income taxes and noncontrolling interests. Fair Value of Financial Instruments Fair value is defined as the price received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to measure fair value: Level 1: Valuations based on quoted prices for identical assets and liabilities in active markets. Level 2: Valuations based on observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. Level 3: Valuations based on unobservable inputs reflecting the Company’s assumptions, consistent with reasonably available assumptions made by other market participants. These valuations require significant judgment. The Company’s financial instruments classified as Level 1 are valued using quoted prices generated by market transactions involving identical assets. Instruments classified as Level 2 are valued using non-binding market consensus prices corroborated with observable market data; quoted market prices for similar instruments in active markets; or pricing models, such as a discounted cash flow model, with significant inputs derived from or corroborated with observable market data. The Company did not hold financial instruments categorized as Level 3 in any period presented. Short-term investments are classified as available-for-sale and reported at fair value using the specific identification method. Unrealized gains and losses are excluded from earnings and reported as a component of other comprehensive income (loss), net of tax. Additionally, the Company periodically assesses whether an other than temporary impairment loss on investments has occurred due to declines in fair value or other market conditions. Declines in fair value considered other-than-temporary are recorded as an impairment in the condensed consolidated statement of operations. The Company did not record impairments of its investments during any of the periods presented. The carrying amounts of certain of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued liabilities and deferred revenue approximate fair value because of the relatively short maturity of these instruments. The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s condensed consolidated balance sheet at September 30, 2015 (in thousands): Balance as of Quoted Prices in Significant Significant Assets: Cash equivalents Money market funds $ 151,691 $ 151,691 $ — $ — Total cash equivalents 151,691 151,691 — — Restricted cash Time deposits 1,983 — 1,983 — Total restricted cash 1,983 — 1,983 — Short-term investments U.S. government agency bonds 23,339 — 23,339 — Time deposits 39,529 — 39,529 — Corporate bonds 346,782 — 346,782 — International government bonds 21,390 — 21,390 — Municipal bonds 187,303 — 187,303 — Total short-term investments 618,343 — 618,343 — Total financial assets $ 772,017 $ 151,691 $ 620,326 $ — The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s condensed consolidated balance sheet at December 31, 2014 (in thousands): Balance as of Quoted Prices in Significant Significant Assets: Cash equivalents Money market funds $ 183,008 $ 183,008 $ — $ — Municipal bonds 1,001 — 1,001 — Total cash equivalents 184,009 183,008 1,001 — Restricted cash — Time deposits 2,058 — 2,058 — Total restricted cash 2,058 — 2,058 — Short-term investments Time deposits 21,726 — 21,726 — Corporate bonds 353,212 — 353,212 — International government bonds 1,501 — 1,501 — Municipal bonds 140,406 — 140,406 — Commercial paper 3,999 — 3,999 — Total short-term investments 520,844 — 520,844 — Total financial assets $ 706,911 $ 183,008 $ 523,903 $ — Cash and Cash Equivalents Cash and cash equivalents include investments in demand deposits, money market funds, and municipal bonds readily convertible into cash. Cash and cash equivalents are stated at cost, which approximates fair value. The Company considers all highly liquid investments purchased with an original maturity date of three months or less to be cash equivalents. Cash and cash equivalents consisted of the following (in thousands): September 30, December 31, Demand deposit accounts $ 149,602 $ 108,316 Money market funds 151,691 183,008 Municipal bonds — 1,001 Total cash and cash equivalents $ 301,293 $ 292,325 Restricted Cash Restricted cash of $2,200,000 and $2,492,000 at September 30, 2015 and December 31, 2014, respectively, was held in accounts owned by the Company to secure property licenses, leased office space, credit card availability and reimbursable direct debits due from the Company. Restricted cash is recorded as “Other non-current assets” on the Company’s condensed consolidated balance sheets. Short-term Investments Short-term investments generally consist of marketable securities with original maturities greater than ninety days as of the date of purchase. Investments in which the Company has the ability and intent, if necessary, to liquidate in order to support its current operations, including those with contractual maturities greater than one year from the date of purchase, are classified as short-term. The Company’s investment securities are classified as available-for-sale and presented at estimated fair value with any unrealized gains and losses included in other comprehensive income (loss). Cash flows from purchases, sales and maturities of available-for-sale securities are classified as investing activities and reported gross, including any related premiums or discounts. Premiums related to purchases of available-for-sale securities were $9,240,000 and $11,239,000 during the nine months ended September 30, 2015 and 2014, respectively. Short-term investments consisted of the following (in thousands): September 30, 2015 Gross Cost Gross Gross Estimated U.S government agency bonds $ 23,375 $ 3 $ (39 ) $ 23,339 Time deposits 39,529 — — 39,529 Corporate bonds 346,949 141 (308 ) 346,782 International government bonds 21,418 — (28 ) 21,390 Municipal bonds 187,254 83 (34 ) 187,303 Total short-term investments $ 618,525 $ 227 $ (409 ) $ 618,343 December 31, 2014 Gross Cost Gross Gross Estimated Time deposits $ 21,726 $ — $ — $ 21,726 Corporate bonds 353,957 7 (752 ) 353,212 International government bonds 1,504 — (3 ) 1,501 Municipal bonds 140,455 45 (94 ) 140,406 Commercial paper 3,999 — — 3,999 Total short-term investments $ 521,641 $ 52 $ (849 ) $ 520,844 For fixed income securities with unrealized losses as of September 30, 2015, the Company does not intend to sell any of these investments; and the Company expects it will not be required to sell any of these investments before recovery of the entire amortized cost basis. The Company has evaluated these fixed income securities and determined that no credit losses exist. Accordingly, the Company has determined that the unrealized losses on fixed income securities as of September 30, 2015 were temporary in nature. The following table summarizes the contractual underlying maturities of the Company’s short-term investments (in thousands): September 30, 2015 Less than 1 Year 1 to 3 Years Total U.S government agency bonds $ 597 $ 22,742 $ 23,339 Time deposits 25,951 13,578 39,529 Corporate bonds 203,039 143,743 346,782 International government bonds 15,192 6,198 21,390 Municipal bonds 131,167 56,136 187,303 Total short-term investments $ 375,946 $ 242,397 $ 618,343 December 31, 2014 Less than 1 Year 1 to 3 Years Total Time deposits $ 21,479 $ 247 $ 21,726 Corporate bonds 240,570 112,642 353,212 International government bonds 1,501 — 1,501 Municipal bonds 87,615 52,791 140,406 Commercial paper 3,999 — 3,999 Total short-term investments $ 355,164 $ 165,680 $ 520,844 Non-marketable Cost Investments During the nine months ended September 30, 2015, the Company invested $2,799,000 for a non-controlling equity interest in a privately-held vacation rental website company in Canada and $2,000,000 for a non-controlling equity interest in a privately-held vacation rental website company in Turkey. The Company also has a non-controlling equity interest in a privately-held company in China with a carrying value of $19,498,000 and a non-controlling equity investment with a carrying value of $15,000,000 in a privately-held company in the United States that operates a travel research application and website. The Company’s investment in these privately-held companies is reported using the cost method of accounting and adjusted to fair value when an event or circumstance indicates an other-than-temporary decline in value has occurred. No event or circumstance indicating an other-than-temporary decline in value of the Company’s interest in the non-marketable cost investments has been identified during any of the periods presented. Accounts Receivable Accounts receivable are generated from credit card merchants who process the Company’s property listing sales, property listings sold on installments to the Company’s customers, partners who advertise the Company’s inventory on their websites and/or sell ancillary products to the Company’s customers and Internet display advertising. Accounts receivable outstanding beyond the contractual payment terms are considered past due. The Company determines its allowance for doubtful accounts by estimating losses on receivables based on known troubled accounts and historical experiences of losses incurred. Property and Equipment Property and equipment are recorded at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Computer equipment and purchased software are generally depreciated over three years. Furniture and fixtures are generally depreciated over five to ten years. Leasehold improvements are depreciated over the shorter of the contractual lease period or estimated useful life. Upon disposal, property and equipment and the related accumulated depreciation are removed and the resulting gain or loss is reflected in the condensed consolidated statements of operations. Ordinary maintenance and repairs are charged to expense, while expenditures that extend the physical or economic life of the assets are capitalized. The Company capitalizes certain internally developed software and website development costs. These capitalized costs were approximately $38,759,000 and $36,038,000 at September 30, 2015 and December 31, 2014, respectively, and are included in property and equipment, net, in the condensed consolidated balance sheets. Internally developed software costs are generally depreciated over five years. The Company recorded depreciation expense on internally developed software and website development costs as follows (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Depreciation expense on internally developed software and website development costs $ 1,677 $ 1,343 $ 4,867 $ 3,947 Goodwill and Intangible Assets Goodwill arises from business combinations and is measured as the excess of the purchase consideration over the sum of the acquisition-date fair values of tangible and identifiable intangible assets acquired, less any liabilities assumed. The Company uses estimates and assumptions to value assets acquired and liabilities assumed at the acquisition date, and these estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, adjustments to the assets acquired and liabilities assumed are recorded with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the condensed consolidated statements of operations. Goodwill and intangible assets deemed to have indefinite useful lives, such as certain trade names, are not amortized. Tests for impairment of goodwill and indefinite-lived intangible assets are performed on an annual basis or when events or circumstances indicate that the carrying amount may not be recoverable. Circumstances that could trigger an impairment test outside of the annual test include but are not limited to: a significant adverse change in the business climate or legal factors, adverse cash flow trends, an adverse action or assessment by a regulator, unanticipated competition, loss of key personnel, decline in stock price and the results of tests for recoverability of a significant asset group. The Company has determined that no triggering event occurred during any of the periods presented. For goodwill and indefinite-lived intangible assets, the Company completes a “Step 0” analysis, which involves evaluating qualitative factors, including macroeconomic conditions, industry and market considerations, cost factors and overall financial performance related to its goodwill and its indefinite-lived intangible assets. If the Company’s “Step 0” analysis indicates that it is more likely than not that the fair value of a reporting unit or of an indefinite-lived intangible asset is less than its carrying amount, then the Company would perform a quantitative two-step impairment test. The quantitative analysis compares the fair value of the Company’s reporting unit or indefinite-lived intangible assets to its carrying amount, and an impairment loss is recognized equivalent to the excess of the carrying amount over fair value. If, after assessing the totality of events or circumstances, the Company determines that it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset exceeds its carrying amount, then the quantitative impairment tests are unnecessary. The Company performs an evaluation of goodwill and indefinite-lived intangible assets for impairment annually in the fourth quarter of its fiscal year. The determination of whether or not goodwill or indefinite-lived intangible assets have become impaired involves a significant level of judgment. Changes in the Company’s strategy and/or market conditions could significantly impact these judgments and require adjustments to recorded amounts of goodwill or indefinite-lived intangible assets. No impairment of goodwill or indefinite-lived intangible assets was identified in any of the periods presented. Identifiable intangible assets consist of trade names, customer relationships, developed technology, domain names and contractual non-competition agreements associated with acquired businesses. Intangible assets with finite lives are amortized over their estimated useful lives on a straight-line basis and reviewed for impairment whenever events or changes in circumstances indicate that an asset’s carrying value may not be recoverable (see Note 3). The straight-line method of amortization represents the Company’s best estimate of the distribution of the economic value of the identifiable intangible assets. Impairment of Long-lived Assets The Company evaluates long-lived assets held for use, such as property and equipment, for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. An impairment loss is recognized when estimated future undiscounted cash flows expected from the use of the asset plus net proceeds expected from disposition of the asset, if any, are less than the carrying value of the asset. When an impairment loss is recognized, the carrying amount of the asset is reduced to its estimated fair value in the period in which the determination is made. No material impairments of long-lived assets have been recorded during any of the periods presented. Leases The Company leases facilities in several countries around the world and certain equipment under non-cancelable lease agreements. The terms of certain lease agreements provide for rental payments on a graduated basis. Rent expense is recognized on a straight-line basis over the lease period and accrued as rent expense incurred but not paid. Revenue Recognition The Company recognizes revenue when persuasive evidence of an agreement exists, delivery has occurred, the sales price is fixed or determinable and collectability is reasonably assured. The Company accounts for sales incentives to customers as a reduction of revenue at the time revenue is recognized from the related product sale. The Company also reports revenue net of any sales taxes collected. The Company generates a significant portion of its revenue from customers purchasing online advertising services related to the listing of their properties for rent, primarily on a subscription basis over a fixed-term. The Company also generates revenue based on the number of traveler inquiries and reservation bookings for property listings on the Company’s websites, local and national Internet display advertisers, license of property management software and ancillary products and services. Payments for term-based subscriptions received in advance of services rendered are recorded as deferred revenue and recognized on a straight-line basis over the listing period. Revenue for inquiry-based contracts are determined on a fixed fee-per-inquiry basis as stated in the arrangement and recognized when the service has been performed. The Company earns commission revenue for reservations made online through its websites, which is calculated as a percentage of the value of the reservation. This revenue is earned as the services are performed or as the customers’ refund privileges lapse and is included in listing revenue in the condensed consolidated statements of operations. Internet display advertising revenue is generated primarily from advertisements appearing on the Company’s websites. Depending upon the terms, revenue is earned each time an impression is delivered, a user clicks on an ad, a graphic ad is displayed, or a user clicks-through the ad and takes a specified action on the destination site. The Company sells gift cards with no expiration date to travelers and does not charge administrative fees on unused cards. There is a portion of the gift card obligation that, based on historical redemption patterns, will not be used by the Company’s customers and is not required to be remitted to relevant jurisdictions (“breakage”). At the point of sale, the Company recognizes estimated breakage as deferred revenue and amortizes it over 48 months based on historical redemption patterns. The Company also records commission revenue for each gift card sale over the same 48-month redemption period. Through its professional software for bed and breakfasts and professional property managers, the Company also makes selected, online bookable properties available to online travel agencies and channel partners. The Company receives a percentage of the transaction value or a fee from the property manager for making this inventory available, which is recognized when earned. This revenue is included in other revenue in the condensed consolidated statements of operations. The Company generates revenue from the sale of hosted software solutions where revenue is recognized on a straight-line basis over the contract term, generally one year. Certain implementation services are essential to the customer’s use of the Company’s hosted software solutions. Accordingly, the Company recognizes implementation revenue ratably over the estimated period of the hosting relationship, which is three years. Recognition starts once the product has been made available to the customer. Training and consulting revenue is recognized upon delivery of the training or consulting services to the end customer. Stock-Based Compensation Stock-based compensation for option awards is recognized based upon the estimated grant date fair value of the awards measured using the Black–Scholes valuation model. The fair value of restricted stock awards is determined based on the number of shares granted and the fair value of the Company’s common stock on the grant date. Fair value is generally recognized as an expense on a straight-line basis, net of estimated forfeitures, over the requisite service period. When estimating forfeitures, the Company considers voluntary termination behaviors as well as trends of actual option forfeitures. The Company uses the “with and without” approach in determining the order in which tax attributes are utilized. As a result, the Company only recognizes a tax benefit from stock-based awards in additional paid-in capital if an incremental tax benefit is realized after all other tax attributes currently available to the Company have been utilized. When tax deductions from stock-based awards are less than the cumulative book compensation expense, the tax effect of the resulting difference is charged first to additional paid-in capital to the extent of the Company’s pool of windfall tax benefits with any remainder recognized in income tax expense. The Company has determined that it has a sufficient windfall pool available and therefore no amounts have been recognized as income tax expense. In addition, the Company accounts for the indirect effects of stock-based awards on other tax attributes through the condensed consolidated statements of operations. The gross benefits of tax deductions in excess of recognized compensation costs are reported as financing cash inflows, but only when such excess tax benefits are realized by a reduction to current taxes payable. The following table summarizes the excess tax benefit that the Company recorded (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Excess tax benefit from stock-based compensation, net $ 5,200 $ 1,362 $ 7,494 $ 2,583 This tax benefit has been recorded as additional paid-in capital on the Company’s condensed consolidated balance sheets. Defined Benefit Pension Plan During the nine months ended September 30, 2015, the Company recorded an adjustment to correct a prior period accounting error related to the Company’s defined benefit pension plan for one of its foreign subsidiaries. The adjustment increased the Company’s liabilities by approximately $4,200,000 and decreased other comprehensive income by approximately $4,000,000 and income before income taxes by approximately $200,000 as of and during the nine months ended September 30, 2015. The Company does not believe these adjustments are material to the consolidated financial statements for the three and nine months ended September 30, 2015, the expected annual results for 2015 or to the consolidated financial statements of any prior period. Income Taxes The Company recognizes income taxes using an asset and liability approach. This approach requires the recognition of deferred tax liabilities and assets for the future tax consequences of events that have been recognized in the Company’s consolidated financial statements or tax returns. The measurement of deferred taxes is based on provisions of the enacted tax law and the effects of future changes in tax laws or rates are not anticipated. A valuation allowance is recognized if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. Evaluating the need for an amount of a valuation allowance for deferred tax assets requires significant judgment and analysis of the positive and negative evidence available, including past operating results, estimates of future taxable income, reversals of existing taxable temporary differences and the feasibility of tax planning in order to determine whether all or some portion of the deferred tax assets will not be realized. Based on the available evidence and judgment, the Company has determined that it is more likely than not that certain loss carryforwards will not be realized; therefore, the Company has established a valuation allowance for such deferred tax assets to reduce the loss carryforward assets to amounts expected to be utilized. The Company may be subject to income tax audits by the respective tax authorities in any or all of the jurisdictions in which the Company operates. The Company is currently undergoing audits in the United States as well as at its subsidiary in the United Kingdom. Significant judgment is required in determining uncertain tax positions. The Company recognizes the benefit of uncertain income tax positions only if these positions are more likely than not to be sustained. Also, the recognized income tax benefit is measured at the largest amount that is more than 50% likely of being realized. The Company adjusts these reserves in light of changing facts and circumstances, such as the closing of an audit or the refinement of an estimate. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest and penalties related to unrecognized tax benefits as a component of income tax expense. The countries in which the Company may be subject to potential examination by tax authorities include Australia, Brazil, Colombia, France, Germany, Italy, the Netherlands, New Zealand, Singapore, Spain, Switzerland, Thailand, the United Kingdom and the United States. The calculation of the Company’s tax liabilities involves the inherent uncertainty associated with the application of complex tax laws. As a multinational corporation, the Company conducts its business in many countries and is subject to taxation in many jurisdictions. The taxation of the Company’s business is subject to the application of various and sometimes conflicting tax laws and regulations as well as multinational tax conventions. The Company’s effective tax rate is highly dependent upon the geographic distribution of its worldwide earnings or losses, the tax regulations and tax rates in each geographic region, the availability of tax credits and carryforwards, and the effectiveness of its tax planning strategies. The application of tax laws and regulations is subject to legal and factual interpretation, judgment and uncertainty. Tax laws themselves are subject to change as a result of changes in fiscal policy, changes in legislation, and the evolution of regulations and court rulings. Consequently, taxing authorities may impose tax assessments or judgments against the Company that could materially impact its tax liability and/or its effective income tax rate. The Company believes it has adequately provided in its financial statements for additional taxes that it estimates may be assessed by the various taxing authorities. While the Company believes that it has adequately provided for all uncertain tax positions, amounts asserted by tax authorities could be greater or less than the Company’s accrued position. These tax liabilities, including the interest and penalties, are adjusted pursuant to a settlement with tax authorities, completion of audit, refinement of estimates or expiration of various statutes of limitation. Foreign Currency The functional currency of the Company’s foreign subsidiaries is generally their respective local currency. The financial statements of the Company’s international operations are translated into U.S. dollars using the exchange rate at each balance sheet date for assets and liabilities, the historical exchange rate for stockholders’ equity, and a weighted average exchange rate for each period for revenue, expenses, gains and losses. Foreign currency translation adjustments are recorded as a separate component of stockholders’ equity. Gains and losses from non-functional currency denominated transactions are recorded in other income (expense) in the Company’s condensed consolidated statements of operations. The following table summarizes the foreign exchange loss that the Company recorded (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Foreign exchange loss $ 279 $ 1,432 $ 930 $ 6,421 Derivative Financial Instruments As a result of the Company’s international operations, it is exposed to various market risks that may affect its consolidated results of operations, cash flows and financial position. These market risks include, but are not limited to, fluctuations in currency exchange rates. The Company’s primary foreign currency exposures are in Euros, British Pounds, Brazilian Real, Australian Dollars, Singapore Dollars and New Zealand Dollars. As a result, the Company faces exposure to adverse movements in currency exchange rates as the financial results of its operations are translated from local currency into U.S. dollars. Additionally, foreign exchange rate fluctuations on transactions denominated in currencies other than the functional currency result in gains and losses that are reflected in other income (expense) in the Company’s co	2. Summary of Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements include the accounts of HomeAway, Inc. and all of its wholly and majority-owned subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States. All significant intercompany transactions and balances have been eliminated in consolidation. Business Segment The Company has one operating segment consisting of various products and services related to its online marketplace of accommodation rental listings. The Company’s chief operating decision maker is considered to be the Chief Executive Officer. The chief operating decision maker allocates resources and assesses performance of the business and other activities at the single operating segment level. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates. These differences could have a material effect on the Company’s future results of operations and financial position. Significant items subject to estimates and assumptions include certain revenues, the allowance for doubtful accounts, the fair value of short-term investments, the carrying amounts of goodwill and other indefinite-lived intangible assets, depreciation and amortization, the valuation of stock options, deferred income taxes and the fair value of noncontrolling interests. Fair Value of Financial Instruments Fair value is defined as the price that would be received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to measure fair value: Level 1: Valuations based on quoted prices for identical assets and liabilities in active markets. Level 2: Valuations based on observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. Level 3: Valuations based on unobservable inputs reflecting the Company’s own assumptions, consistent with reasonably available assumptions made by other market participants. These valuations require significant judgment. The following section describes the valuation methodologies used to measure certain financial assets and financial liabilities at fair value. Cash Equivalents, Restricted Cash and Short-Term Investments The Company’s cash equivalents, restricted cash and short-term investments classified as Level 1 are valued using quoted prices generated by market transactions involving identical assets. Short-term investments classified as Level 2 are valued using non-binding market consensus prices that are corroborated with observable market data; quoted market prices for similar instruments in active markets; or pricing models, such as a discounted cash flow model, with all significant inputs derived from or corroborated with observable market data. The Company did not hold any cash equivalents, restricted cash or short-term investments categorized as Level 3 as of December 31, 2014 or 2013. Short-term investments include time deposits, corporate bonds, municipal bonds and commercial paper and are classified as available-for-sale and reported at fair value using the specific identification method. Unrealized gains and losses are excluded from earnings and reported as a component of other comprehensive income (loss), net of related estimated tax provisions or benefits. Additionally, the Company periodically assesses whether an other than temporary impairment loss on investments has occurred due to declines in fair value or other market conditions. Declines in fair value that are considered other than temporary are recorded as an impairment in the consolidated statement of operations. The Company did not record any impairments of its investments for any of the periods presented. The carrying amounts of certain of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued liabilities and deferred revenue approximate fair value because of the relatively short maturity of these instruments. The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s consolidated balance sheets at December 31, 2014 (in thousands): Balance as of Quoted Prices in Significant Other Significant Assets Cash equivalents Money market funds $ 183,008 $ 183,008 $ — $ — Municipal bonds 1,001 — 1,001 — Total cash equivalents 184,009 183,008 1,001 — Restricted cash Time deposits 2,058 — 2,058 — Total restricted cash 2,058 — 2,058 — Short-term investments Certificates of deposit 21,726 — 21,726 — Corporate bonds 353,212 — 353,212 — Municipal bonds 140,406 — 140,406 — International government bonds 1,501 — 1,501 — Commercial paper 3,999 — 3,999 — Total short-term investments 520,844 — 520,844 — Total financial assets $ 706,911 $ 183,008 $ 523,903 $ — The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s consolidated balance sheets at December 31, 2013 (in thousands): Balance as of Quoted Prices in Significant Other Significant Assets Cash equivalents Money market funds $ 26,451 $ 26,451 $ — $ — Total cash equivalents 26,451 26,451 — — Restricted cash Money market funds 758 758 — — Total restricted cash 758 758 — — Short-term investments Time deposits 2,054 — 2,054 — Corporate bonds 33,257 — 33,257 — Municipal bonds 31,487 — 31,487 — Total short-term investments 66,798 — 66,798 — Total financial assets $ 94,007 $ 27,209 $ 66,798 $ — Cash and Cash Equivalents Cash and cash equivalents include investments in money market funds, corporate and municipal bonds and time deposits that are readily convertible into cash. Cash and cash equivalents are stated at cost, which approximates fair value. The Company considers all highly liquid investments purchased with an original maturity date of three months or less to be cash equivalents. Cash and cash equivalents consisted of the following at December 31, 2014 and December 31, 2013 (in thousands): December 31, 2014 2013 Demand deposit accounts $ 108,316 $ 298,157 Money market funds 183,008 26,451 Municipal bonds 1,001 — Total $ 292,325 $ 324,608 Restricted Cash Restricted cash of $2,492,000 and $2,180,000 at December 31, 2014 and December 31, 2013, respectively, was held in accounts owned by the Company in conjunction with property license requirements, leased office space and to secure credit card availability and reimbursable direct debits due from the Company. Short-term Investments Short-term investments generally consist of marketable securities that have original maturities greater than ninety days as of the date of purchase. Investments in which the Company has the ability and intent, if necessary, to liquidate in order to support its current operations, including those with contractual maturities greater than one year from the date of purchase, are classified as short-term. The Company’s investment securities are classified as available-for-sale and are presented at estimated fair value with any unrealized gains and losses included in other comprehensive income (loss). Cash flows from purchases, sales and maturities of available-for-sale securities are classified as cash flows from investing activities and reported gross, including any related premiums or discounts. Premiums related to purchases of available-for-sale securities were $13,187,000 and $8,065,000 during the year ended December 31, 2014 and 2013, respectively. Fair values are based on quoted market prices. Short-term investments consisted of the following at December 31, 2014 and December 31, 2013 (in thousands): December 31, 2014 Gross Gross Gross Estimated Time deposits $ 21,726 $ — $ — $ 21,726 Corporate bonds 353,957 7 (752 ) 353,212 Municipal bonds 140,455 45 (94 ) 140,406 International government bonds 1,504 — (3 ) 1,501 Commercial paper 3,999 — — 3,999 Total short-term investments $ 521,641 $ 52 $ (849 ) $ 520,844 December 31, 2013 Gross Gross Gross Estimated Time deposits $ 2,055 $ — $ (1 ) $ 2,054 Corporate bonds 33,274 33 (50 ) 33,257 Municipal bonds 31,486 16 (15 ) 31,487 Total short-term investments $ 66,815 $ 49 $ (66 ) $ 66,798 For fixed income securities that have unrealized losses as of December 31, 2014, the Company does not have the intent to sell any of these investments and it is not more likely than not that it will be required to sell any of these investments before recovery of the entire amortized cost basis. The Company has evaluated these fixed income securities and determined that no credit losses exist. Accordingly, the Company has determined that the unrealized losses on fixed income securities as of December 31, 2014 were temporary in nature. The following table summarizes the contractual underlying maturities of the Company’s short-term investments at December 31, 2014 and December 31, 2013 (in thousands): December 31, 2014 Less than 1 to 3 Years Total Time deposits $ 21,479 $ 247 $ 21,726 Corporate bonds 240,570 112,642 353,212 Municipal bonds 87,615 52,791 140,406 International government bonds 1,501 — 1,501 Commercial paper 3,999 — 3,999 Total short-term investments $ 355,164 $ 165,680 $ 520,844 December 31, 2013 Less than 1 to 3 Years Total Time deposits $ 500 $ 1,554 $ 2,054 Corporate bonds 11,164 22,093 33,257 Municipal bonds 3,031 28,456 31,487 Total short-term investments $ 14,695 $ 52,103 $ 66,798 Non-marketable Cost Investment During the year ended December 31, 2014, the Company invested an additional $9,385,000 for a non-controlling equity interest in a privately-held company in China. As of December 31, 2014, the total carrying value of the Company’s investment in the privately-held company was $19,498,000. Also during 2014, the Company invested $15,000,000 for a non-controlling equity interest in a privately-held company in the United States that operates a travel research application and website. The Company’s investment in these privately-held companies is reported using the cost method of accounting or marked down to fair value when an event or circumstance indicates an other-than-temporary decline in value has occurred. No event or circumstance indicating an other-than-temporary decline in value of the Company’s interest in the non-marketable cost investments was identified. These investments are recorded in other non-current assets on the consolidated balance sheets. Accounts Receivable Accounts receivable are generated from several sources. Amounts due from credit card merchants who process the Company’s credit card sales from property listings and remit the proceeds to the Company are the primary source of accounts receivable. Accounts receivable are also generated from Internet display advertising amounts due in the ordinary course of business as well as amounts due to the Company for property listings, other products purchased on account or amounts due from partners who provide products and services such as advertising the properties of our property owners and managers on their websites, insurance products and payment processing services. Accounts receivable outstanding longer than the contractual payment terms are considered past due. The Company determines its allowance for doubtful accounts by estimating losses on receivables based on known troubled accounts and historical experiences of losses incurred. Property and Equipment Property and equipment are recorded at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Computer equipment and purchased software are generally depreciated over three years. Furniture and fixtures are generally depreciated over five to ten years. Leasehold improvements are depreciated on a straight-line basis over the shorter of the contractual lease period or their estimated useful life. Upon disposal, property and equipment and the related accumulated depreciation are removed from the accounts and the resulting gain or loss is reflected in the statements of operations. Ordinary maintenance and repairs are charged to expense, while expenditures that extend the physical or economic life of the assets are capitalized. The Company capitalizes certain internally developed software and website development costs. These capitalized costs were $36,038,000 and $30,523,000 at December 31, 2014 and December 31, 2013, respectively, and are included in property and equipment, net, in the consolidated balance sheets. Internally developed software costs are generally depreciated over five years. The Company recorded depreciation expense on internally developed software and website development costs as follows for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Depreciation expense on internally developed software and website development costs $ 5,471 $ 3,939 $ 2,874 Goodwill and Intangible Assets Goodwill arises from business combinations and is measured as the excess of the purchase consideration over the sum of the acquisition-date fair values of tangible and identifiable intangible assets acquired, less any liabilities assumed. The Company uses estimates and assumptions to value assets acquired and liabilities assumed at the acquisition date, and these estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, adjustments to the assets acquired and liabilities assumed are recorded with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the consolidated statements of operations. Goodwill and intangible assets deemed to have indefinite useful lives, such as certain trade names, are not amortized. Tests for impairment of goodwill and indefinite-lived intangible assets are performed on an annual basis or when events or circumstances indicate that the carrying amount may not be recoverable. Circumstances that could trigger an impairment test outside of the annual test include but are not limited to: a significant adverse change in the business climate or legal factors, adverse cash flow trends, an adverse action or assessment by a regulator, unanticipated competition, loss of key personnel, decline in stock price and the results of tests for recoverability of a significant asset group. The Company determined that no triggering event occurred during any of the periods presented. For goodwill and indefinite lived intangible assets, the Company completes what is referred to as the “Step 0” analysis, which involves evaluating qualitative factors, including macroeconomic conditions, industry and market considerations, cost factors, and overall financial performance related to its goodwill and its indefinite lived intangible assets. If the Company’s “Step 0” analysis indicates that it is more likely than not that the fair value of a reporting unit or of an indefinite lived intangible asset is less than its carrying amount, then the Company would perform a quantitative two-step impairment test. The quantitative analysis compares the fair value of the Company’s reporting unit or indefinite-lived intangible assets to its carrying amount, and an impairment loss is recognized equivalent to the excess of the carrying amount over fair value. If, after assessing the totality of events or circumstances, the Company determines that it is more likely than not that the fair value of a reporting unit or indefinite lived intangible asset exceeds its carrying amount, then the quantitative impairment tests are unnecessary. The Company performs an evaluation of goodwill and indefinite-lived intangible assets for impairment annually in the fourth quarter of its fiscal year. The determination of whether or not goodwill or indefinite-lived intangible assets have become impaired involves a significant level of judgment. Changes in the Company’s strategy and/or market conditions could significantly impact these judgments and require adjustments to recorded amounts of goodwill or intangible assets. No impairment of goodwill or indefinite-lived intangible assets was identified in any of the periods presented. Identifiable intangible assets consist of trade names, customer listings, technology, domain names and contractual non-competition agreements associated with acquired businesses. Intangible assets with finite lives are amortized over their estimated useful lives on a straight-line basis and reviewed for impairment whenever events or changes in circumstances indicate that an asset’s carrying value may not be recoverable (see Note 4). The straight-line method of amortization represents the Company’s best estimate of the distribution of the economic value of the identifiable intangible assets. Impairment of Long-lived Assets The Company evaluates long-lived assets held for use, such as property and equipment, for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. An impairment loss is recognized when estimated future undiscounted cash flows expected to result from the use of the asset plus net proceeds expected from disposition of the asset, if any, are less than the carrying value of the asset. When an impairment loss is recognized, the carrying amount of the asset is reduced to its estimated fair value in the period in which the determination is made. No material impairments of long-lived assets have been recorded during any of the periods presented. Leases The Company leases facilities in several countries around the world and certain equipment under non-cancelable lease agreements. The terms of certain lease agreements provide for rental payments on a graduated basis. Rent expense is recognized on a straight-line basis over the lease period and accrued as rent expense incurred but not paid. Revenue Recognition The Company recognizes revenue when persuasive evidence of an agreement exists, delivery has occurred, the sales price is fixed or determinable and collectability is reasonably assured. The Company accounts for sales incentives to customers as a reduction of revenue at the time that the revenue is recognized from the related product sale. The Company also reports revenue net of any sales tax collected. The Company generates a significant portion of its revenue from customers purchasing online advertising services related to the listing of their properties for rent, primarily on a subscription basis over a fixed-term. The Company also generates revenue based on the number of traveler inquiries and reservation bookings for property listings on the Company’s websites, local and national Internet display advertisers, license of property management software and ancillary products and services. Payments for term-based subscriptions received in advance of services being rendered are recorded as deferred revenue and recognized on a straight-line basis over the listing period. Revenue for inquiry-based contracts are determined on a fixed fee-per-inquiry as stated in the arrangement and recognized when the service has been performed. The Company earns commission revenue for reservations made online through its websites, which is calculated as a percentage of the value of the reservation. This revenue is earned as the services are performed or as the customers’ refund privileges lapse and is included in listing revenue in the consolidated statement of operations. Internet display advertising revenue is generated primarily from advertisements appearing on the Company’s websites. Depending upon the terms, revenue is earned each time an impression is delivered, a user clicks on an ad, a graphic ad is displayed, or a user clicks-through the ad and takes a specified action on the destination site. The Company sells gift cards with no expiration date to travelers and does not charge administrative fees on unused cards. There is a portion of the gift card obligation that, based on historical redemption patterns, will not be used by the Company’s customers and is not required to be remitted to relevant jurisdictions (“breakage”). At the point of sale, the Company recognizes breakage as deferred revenue and amortizes it over 48 months based on historical redemption patterns. The Company also records commission revenue for each gift card sale over the same 48-month redemption period. Through its professional software for bed and breakfasts and professional property managers, the Company makes selected, online bookable properties available to online travel agencies and channel partners. The Company receives a percentage of the transaction value or a fee from the property manager for making this inventory available, which is recognized when earned. This revenue is included in other revenue in the consolidated statement of operations. The Company generates revenue from the licensing of software products, the sale of maintenance agreements and the sale of hosted software solutions. For software license sales, one year of maintenance is typically included as part of the initial purchase price of the bundled offering with annual renewals of the maintenance component of the agreement following in subsequent years. The Company recognizes revenue from the sale of perpetual licenses upon delivery, which generally occurs upon electronic transfer of the license key that makes the product available to the purchaser. As software is usually sold with maintenance, the amount of revenue allocated to the software license is determined by estimating the fair value of the maintenance and subtracting it from the total invoice or contract amount. Vendor-specific objective evidence, or VSOE, of the fair value of maintenance services is determined by the standard published list pricing for maintenance renewals, as the Company generally charges list prices for maintenance renewals. In determining VSOE, the Company requires that a substantial majority of the selling price for maintenance services fall within a reasonably narrow pricing range. Maintenance and support revenue is recognized ratably over the term of the agreement beginning on the activation date. Amounts that have been invoiced are recorded in accounts receivable and in deferred revenue or revenue, depending on whether the revenue recognition criteria have been met. Sales of hosted software solutions are generally for a one-year period. Revenue is recognized on a straight-line basis over the contract term. Certain implementation services related to the hosting services are essential to the customer’s use of the hosting services. For sales of these hosting services where the Company is responsible for implementation, the Company recognizes implementation revenue ratably over the estimated period of the hosting relationship, which the Company considers to be three years. Recognition starts once the product has been made available to the customer. Training and consulting revenue is recognized upon delivery of the training or consulting services to the end customer. The Company accounts for sales incentives to customers as a reduction of revenue at the time that the revenue is recognized from the related product sale. The Company also reports revenue net of any sales tax collected. Cost of Revenue Cost of revenue consists of salaries, benefits and related expenses and stock-based compensation of the Company’s customer service and web hosting personnel, merchant fees charged by credit card processors, costs associated with the hosting of the Company’s websites, costs associated with payments and reserves under the Company’s Carefree Rental Guarantee, allocated facility expenses and depreciation costs. Advertising Expenses The Company expenses all advertising costs as incurred. Advertising expenses included in sales and marketing expenses were approximately $59,978,000, $39,138,000 and $37,559,000 for the years ended December 31, 2014, 2013 and 2012, respectively. Stock-Based Compensation The cost of stock-based compensation is recognized in the financial statements based upon the estimated grant date fair value of the awards measured using the Black–Scholes valuation model. The fair value of restricted stock awards and units is determined based on the number of shares granted and the fair value of the Company’s common stock as of the grant date. Fair value is generally recognized as an expense on a straight-line basis, net of estimated forfeitures, over the employee requisite service period. When estimating forfeitures, the Company considers voluntary termination behaviors as well as trends of actual option forfeitures. The Company uses the “with and without” approach in determining the order in which tax attributes are utilized. As a result, the Company only recognizes a tax benefit from stock-based awards in additional paid-in capital if an incremental tax benefit is realized after all other tax attributes currently available to the Company have been utilized. When tax deductions from stock-based awards are less than the cumulative book compensation expense, the tax effect of the resulting difference is charged first to additional paid-in capital to the extent of the Company’s pool of windfall tax benefits with any remainder recognized in income tax expense. The Company has determined that it has a sufficient windfall pool available and therefore no amounts have been recognized in income tax expense. In addition, the Company accounts for the indirect effects of stock-based awards on other tax attributes through the consolidated statements of operations. The gross benefits of tax deductions in excess of recognized compensation costs are reported as financing cash inflows, but only when such excess tax benefits are realized by a reduction to current taxes payable. The following table summarizes the excess tax benefit that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Excess tax benefit from stock-based compensation, net $ 2,743 $ 8,226 $ 7,122 This tax benefit has been recorded as additional paid-in capital on the Company’s consolidated balance sheets. Income Taxes The Company recognizes income taxes using an asset and liability approach. This approach requires the recognition of deferred tax liabilities and assets for the future tax consequences of events that have been recognized in the Company’s consolidated financial statements or tax returns. The measurement of deferred taxes is based on provisions of the enacted tax law and the effects of future changes in tax laws or rates are not anticipated. A valuation allowance is recognized if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. Evaluating the need for an amount of a valuation allowance for deferred tax assets requires significant judgment and analysis of the positive and negative evidence available, including past operating results, estimates of future taxable income, reversals of existing taxable temporary differences and the feasibility of tax planning in order to determine whether all or some portion of the deferred tax assets will not be realized. Based on the available evidence and judgment, the Company has determined that it is more likely than not that certain loss carryforwards will not be realized; therefore, the Company has established a valuation allowance for such deferred tax assets to reduce the loss carryforward assets to amounts expected to be utilized. The Company may be subject to income tax audits by the respective tax authorities in any or all of the jurisdictions in which the Company operates. The Company is currently undergoing an audit in the United States as well as at its subsidiary in the United Kingdom. Significant judgment is required in determining uncertain tax positions. The Company recognizes the benefit of uncertain income tax positions only if these positions are more likely than not to be sustained. Also, the recognized income tax benefit is measured at the largest amount that is more than 50% likely of being realized. The Company adjusts these reserves in light of changing facts and circumstances, such as the closing of an audit or the refinement of an estimate. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest and penalties related to unrecognized tax benefits as a component of income tax expense. The countries in which the Company may be subject to potential examination by tax authorities include Australia, Brazil, Colombia, France, Germany, Italy, the Netherlands, New Zealand, Singapore, Spain, Switzerland, Thailand, the United Kingdom and the United States. The calculation of the Company’s tax liabilities involves the inherent uncertainty associated with the application of complex tax laws. As a multinational corporation, the Company conducts its business in many countries and is subject to taxation in many jurisdictions. The taxation of the Company’s business is subject to the application of various and sometimes conflicting tax laws and regulations as well as multinational tax conventions. The Company’s effective tax rate is highly dependent upon the geographic distribution of its worldwide earnings or losses, the tax regulations and tax rates in each geographic region, the availability of tax credits and carryforwards, and the effectiveness of its tax planning strategies. The application of tax laws and regulations is subject to legal and factual interpretation, judgment and uncertainty. Tax laws themselves are subject to change as a result of changes in fiscal policy, changes in legislation, and the evolution of regulations and court rulings. Consequently, taxing authorities may impose tax assessments or judgments against the Company that could materially impact its tax liability and/or its effective income tax rate. The Company believes it has adequately provided in its financial statements for additional taxes that it estimates may be assessed by the various taxing authorities. While the Company believes that it has adequately provided for all uncertain tax positions, amounts asserted by tax authorities could be greater or less than the Company’s accrued position. These tax liabilities, including the interest and penalties, are adjusted pursuant to a settlement with tax authorities, completion of audit, refinement of estimates or expiration of various statutes of limitation. Foreign Currency Translation The functional currency of the Company’s foreign subsidiaries is generally their respective local currency. The financial statements of the Company’s international operations are translated into U.S. dollars using the exchange rate at each balance sheet date for assets and liabilities, the historical exchange rate for stockholders’ equity, and a weighted average exchange rate for each period for revenue, expenses, and gains and losses. Foreign currency translation adjustments are recorded as a separate component of stockholders’ equity. Gains and losses from foreign currency denominated transactions are recorded in other income (expense) in the Company’s consolidated statements of operations. The following table summarizes the foreign exchange loss that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Foreign exchange loss $ 7,138 $ 5,964 $ 2,618 Derivative Financial Instruments As a result of the Company’s international operations, it is exposed to various market risks that may affect its consolidated results of operations, cash flows and financial position. These market risks include, but are

Business Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Business Combinations	3. Business Combinations The following table summarizes the Company’s acquisitions during the years ended December 31, 2014, 2013 and 2012 with amounts shown below as fair values at each respective acquisition date (in thousands): Glad to Have Stayz Bookabach travelmob Toprural Year acquired 2014 2013 2013 2013 2012 Net tangible assets (liabilities) acquired Cash $ 25 $ 4,942 $ 395 $ 63 $ 3,220 Deferred revenue (65 ) (2,234 ) (350 ) (43 ) (2,269 ) Amounts payable to property owners — (4,187 ) (194 ) (473 ) — Other 17 (365 ) 228 (123 ) (315 ) Total tangible assets (liabilities) acquired (23 ) (1,844 ) 79 (576 ) 636 Deferred tax liabilities (1,653 ) (5,313 ) (228 ) (513 ) (3,193 ) Trade name 1,177 5,224 161 607 1,060 Developed technology 3,760 1,735 64 2,937 2,144 Customer relationships 1,643 18,288 446 1,123 7,440 Goodwill 11,647 177,777 3,514 16,833 11,190 Non-competition agreements 240 1,387 300 150 — Redeemable noncontrolling interests — — (1,938 ) (9,028 ) — Aggregate purchase price 16,791 197,254 2,398 11,533 19,277 Less: cash acquired (25 ) (4,942 ) (395 ) (63 ) (3,220 ) $ 16,766 $ 192,312 $ 2,003 $ 11,470 $ 16,057 The following table summarizes the Company’s weighted-average amortization period, in total and by major finite-lived intangible asset class, by acquisition during the years ended December 31, 2014, 2013 and 2012 (in years): Glad to Stayz Bookabach travelmob Toprural Developed technology 5.0 2.0 1.8 7.0 4.0 Customer relationships 8.0 11.0 11.0 13.0 8.0 Non-competition agreements 3.0 3.0 3.0 3.0 — Trade names 10.0 10.0 10.0 10.0 10.0 Total weighted-average amortization period 6.5 9.8 7.8 8.7 7.4 Tangible net assets (liabilities) were valued at their respective carrying amounts, which the Company believes approximate their current fair values at the respective acquisition dates due to their short durations. The valuation of identifiable intangible assets acquired reflects management’s estimates based on, among other factors, use of established valuation methods. The value of the acquired trade names was determined using a relief from royalty method. Developed technology was valued on a combination of the income and market approach. Customer relationships were valued by projecting the estimated cash flow from the Company’s existing customer relationships. Non-competition agreements have been valued based on other arms’ length transactions between the Company and selling shareholders in past acquisitions or based on the present value of estimated future cash flows with and without this asset. Identifiable intangible assets with definite lives are amortized over the period of estimated benefit using the straight-line method and the estimated useful lives of two to thirteen years. The straight-line method of amortization represents the Company’s best estimate of the distribution of the economic value of the identifiable intangible assets. Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired. Redeemable noncontrolling interests are measured at fair value, at the date of acquisition, and classified as mezzanine equity due to the contingent redeemable feature. The Company has elected to recognize increases in the redemption value immediately as they occur and adjust the carrying amount of the noncontrolling interests to equal the redemption value at the end of each reporting period, however this adjustment will not reduce the noncontrolling interests below the initial amount recorded. See Note 10 for the reconciliation of the redeemable noncontrolling interests. Glad to Have You, Inc. In March 2014, the Company acquired Glad to Have You, Inc. (“Glad To Have You”), a United States company that is the creator of a mobile guest management solution for the vacation rental industry, for cash consideration of approximately $16,791,000. The direct acquisition costs incurred by the Company were not significant to the Company’s operating results, and all such costs were expensed as incurred and included in general and administrative expenses in the consolidated statement of operations. Of the total consideration paid, $250,000 of the cash consideration was deposited in escrow as security for the benefit of the Company against breaches of representations and warranties, covenants and certain other expressly enumerated matters by the sellers. The escrow funds not used to satisfy such seller obligations will be released to the sellers two business days following the first anniversary date of the acquisition. In addition, $250,000 of the total cash consideration was deposited in escrow as security and pending final net working capital related purchase price adjustments. The net working capital related escrow funds were released in June 2014. The acquired goodwill primarily represents synergies associated with adding Glad To Have You’s mobile applications to the Company’s marketplace of websites to provide property owners and managers with an additional way to manage and communicate with guests during their stay. Goodwill is not deductible for tax purposes. The acquired trade name has an estimated useful life of 10 years from the date of acquisition, the developed technology has an estimated useful life of 5 years from the date of acquisition and the customer relationships have an estimated useful life of 8 years from the date of acquisition. Non-compete agreements have an estimated useful life of 3 years. The total weighted average amortization period for the intangibles acquired is 6.5 years. The results of Glad To Have You have been included in the Company’s consolidated results since the acquisition date in March 2014. Pro forma results of operations related to this acquisition have not been presented because Glad To Have You’s operating results up to and subsequent to the date of acquisition were not material to the Company’s consolidated financial statements. Stayz In December 2013, the Company acquired 100% of the outstanding stock of Stayz Pty Limited (“Stayz”), the leading online vacation rental marketplace in Australia, for total consideration of approximately $197,820,000. Consideration included $196,739,000 in cash paid directly to the sellers and $1,081,000 paid to the sellers in April 2014 based on completed working capital purchase price adjustments pursuant to the purchase agreement. The Company incurred approximately $3,802,000 in direct acquisition costs, all of which were expensed as incurred, and are included in general and administrative expenses in the consolidated statement of operations. The Company also entered into certain transitional service agreements with the prior owners of Stayz to have accounting, infrastructure and support services provided to the Company for a defined period of time in 2014. Amounts paid for these services are recorded as incurred and are included in the Company’s consolidated results as general and administrative expenses. The acquisition of Stayz adds approximately 40,000 additional Australian-based properties to the HomeAway network and provides HomeAway a strong momentum to its pay-per-booking product offering. The acquired goodwill primarily represents synergies associated with adding Stayz to the Company’s marketplace of websites to provide travelers with a broader inventory selection of vacation properties. Goodwill is not deductible for tax purposes. The results of Stayz have been included in the Company’s consolidated results since the acquisition date in December 2013. The following unaudited pro forma supplemental information presents an aggregated summary of the results of operations of the Company for the years ended December 31, 2013 and 2012, assuming the completion of the 2013 acquisition of Stayz occurred on January 1, 2012 (in thousands). The unaudited pro forma supplemental information is based on estimates and assumptions that the Company believes are reasonable. Accordingly, the Company adjusted the pro forma results for quantifiable items such as direct acquisition costs, amortization of acquired intangible assets and the estimated tax provision of the pro form combined results. Further, during the quarter ended March 31, 2014 the Company revised the pro forma revenue and net income for the year ended December 31, 2013 by a decrease of $1.9 million and $1.3 million, respectively, based on adjustments of certain estimates, as the Company obtained additional information about the facts and circumstances that existed as of the acquisition date. The average foreign exchange rate during each of the presented years was used in preparing the supplemental information. The unaudited pro forma supplemental information prepared by the Company is not necessarily indicative of the results expected in future periods or the results that actually would have been realized had the acquired business and the Company been a combined company during the specified periods. Year Ended December 31, 2013 2012 Pro forma total revenue $ 370,620 $ 305,904 Pro forma net income 28,687 17,855 Bookabach In November 2013, the Company acquired 55% of the outstanding stock of Bookabach Limited (“Bookabach”), a leading vacation rental website in New Zealand, for cash consideration of approximately $2,398,000. The Company incurred approximately $160,000 in direct acquisition costs, all of which were expensed as incurred, and are included in general and administrative expenses in the consolidated statement of operations. Approximately $492,000 of the cash consideration was deposited in escrow as security for the benefit of the Company against breaches of representations and warranties, covenants and certain other expressly enumerated matters by the sellers. The escrow funds not used to satisfy such seller obligations will be released to the sellers on the second anniversary date of the acquisition. Bookabach features more than 8,000 property listings located in New Zealand, Australia and the Pacific Islands including holiday homes and beach houses, also known as baches. The acquired goodwill primarily represents synergies associated with adding Bookabach to the Company’s marketplace of websites to provide travelers with a broader inventory selection of vacation properties. Goodwill is not deductible for tax purposes. The results of Bookabach have been included in the Company’s consolidated results since the acquisition date in November 2013. Pro forma results of operations related to this acquisition have not been presented since Bookabach’s operating results up to the date of acquisition were not material to the Company’s consolidated financial statements. Under the terms of the acquisition agreement, the Company has a call option to purchase the remaining non-controlling interest of Bookabach in two installments on October 31, 2014 and June 30, 2015, respectively. In the event that the Company does not exercise one or both of its call options to purchase the remaining shares of Bookabach by such deadlines, the remaining Bookabach shareholders have two put options to require the Company to repurchase their remaining interest in two installments for which, if exercised, shall be deemed to occur on October 31, 2014 and June 30, 2015, respectively. The option was determined to have no value. In accordance with the acquisition agreement, the remaining Bookabach shareholders exercised their first put option, effective October 2014, requiring the Company to purchase 20% of the outstanding equity held by noncontrolling shareholders for cash consideration of $1,461,000. Following this repurchase, the Company owns 75% of the outstanding stock of Bookabach. In November 2014, the Company and the remaining Bookabach shareholders amended the acquisition agreement to extend the date of the second call option by the Company and the corresponding second put option by the remaining Bookabach shareholders from June 30, 2015 to June 30, 2016. Additionally, the formula for calculating the value of the second call and put option was amended to reflect the extension of time provided to the second option. The Company recorded the impact of the amendment as an increase in the noncontrolling interest value on the Company’s consolidated balance sheet. travelmob In August 2013, the Company acquired 100% of the outstanding stock of travelmob Pte. Ltd. (“travelmob”) for $20.0 million, net of cash acquired and concurrently sold a non-controlling interest in travelmob back to certain sellers for $8.5 million. The Company incurred approximately $284,000 in direct acquisition costs, all of which were expensed as incurred, and are included in general and administrative expenses in the consolidated statement of operations. Travelmob features over 14,000 Asia Pacific region short-term rental listings including luxury villas, urban apartments, houseboats, a private island as well as shared spaces. The acquired goodwill represents synergies associated with adding travelmob to the Company’s marketplace of websites to provide travelers with a broader inventory selection of vacation properties to choose from and provides the Company with a platform to serve the Asian market. Goodwill is not deductible for tax purposes. The results of travelmob have been included in the Company’s consolidated results since the acquisition date in August 2013. Pro forma results of operations related to this acquisition have not been presented since travelmob’s operating results up to the date of acquisition were not material to the Company’s consolidated financial statements. Under the terms of the acquisition agreement and subsequent amendments, the Company also concurrently made a $7.0 million cash investment in the business resulting in the Company holding 68.5% of the outstanding stock and the non-controlling interest holding 31.5%, will loan travelmob up to $13.0 million (approximately $9.6 million using exchange rates as of December 31, 2014) over the next few years and has a call option to purchase the remaining non-controlling interest of travelmob for the period defined in the agreement beginning on December 31, 2016. In the event the Company does not exercise its call option to purchase the remaining shares of travelmob by such deadline, the remaining travelmob shareholders have a put option to require the Company to repurchase their remaining interest for the period defined in the agreement beginning on February 1, 2017. The option was determined to have no value. In addition, certain other shares were reserved as part of an Employee Stock Options Plan (“ESOP”) in travelmob. Upon acquisition, the vested shares were measured at fair value and the amount attributable to the pre-combination service was included in the fair value of the noncontrolling interests. Toprural In April 2012, the Company acquired 100% of the outstanding stock of Top Rural S.L., the leading site for independently-owned rural accommodations in Southern Europe (the acquired business is referred to as “Toprural”), for cash consideration of approximately $19,277,000. The acquisition of Toprural further solidifies the Company’s market presence in Spain and Southern Europe and extends the Company’s reach to a desirable European traveler segment that seeks long weekend holidays to small towns or countryside destinations. The Company incurred approximately $285,000 in direct acquisition costs, all of which were expensed as incurred, and are included in general and administrative expenses in the consolidated statement of operations. Approximately $2,670,000 of the cash consideration was deposited in escrow as security for the benefit of the Company against breaches of representations and warranties, covenants and certain other expressly enumerated matters by the sellers. The escrow funds were released to the sellers in two equal payments on the first and second anniversary dates of the acquisition. The acquired goodwill primarily represents synergies associated with adding Toprural to the Company’s marketplace of websites to provide travelers with a broader inventory selection of vacation properties. Goodwill is not deductible for tax purposes. The results of Toprural have been included in the Company’s consolidated results since the acquisition date in April 2012. The following unaudited pro forma supplemental information presents an aggregated summary of the results of operations of the Company for the year ended December 31, 2012, assuming the completion of the 2012 acquisition of Toprural occurred on January 1, 2011. The unaudited pro forma supplemental information is based on estimates and assumptions that the Company believes are reasonable. The average foreign exchange rate during the year was used in preparing the supplemental information. The unaudited pro forma supplemental information prepared by the Company is not necessarily indicative of the results expected in future periods or the results that actually would have been realized had the acquired business and the Company been a combined company during the specified periods. Year Ended 2012 Pro forma total revenue $ 281,858 Pro forma net income 14,959

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	3. Goodwill and Other Intangible Assets Goodwill Changes in the Company’s goodwill balance are summarized in the table below (in thousands): Balance at December 31, 2013 $ 507,611 Acquired in business combinations 11,647 Foreign currency translation adjustment (26,098 ) Post-acquisition goodwill adjustment for Stayz 511 Balance at December 31, 2014 493,671 Foreign currency translation adjustment (33,622 ) Balance at September 30, 2015 $ 460,049 The goodwill arising from the December 2013 acquisition of Stayz was increased by $511,000 to $178,288,000 in the year ended December 31, 2014 due to certain income taxes and changes in fair value estimates derived from additional information gained during the measurement period. Goodwill adjustments were not significant to the Company’s previously reported operating results or financial position. Therefore, the Company elected not to retrospectively adjust the acquisition date accounting and instead recorded the adjustment in the year ended December 31, 2014. Intangible Assets The Company’s intangible assets, excluding goodwill, primarily consist of assets acquired in business combinations and are recorded at estimated fair value on the date of acquisition. The Company’s finite-lived intangible assets are summarized in the table below (in thousands): September 30, 2015 December 31, 2014 Useful Life Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Trade names and trademarks 10 $ 28,525 $ (9,572 ) $ 18,953 $ 30,316 $ (8,396 ) $ 21,920 Developed technology 2-8 20,290 (14,748 ) 5,542 21,293 (13,231 ) 8,062 Customer relationships 6-14 53,436 (27,650 ) 25,786 57,656 (25,512 ) 32,144 Noncompete agreements and domain names 2-5 1,949 (1,256 ) 693 2,224 (923 ) 1,301 Total $ 104,200 $ (53,226 ) $ 50,974 $ 111,489 $ (48,062 ) $ 63,427 Amortization of noncompete agreements is recorded over the term of the agreements. The following table summarizes amortization expense (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Amortization expense $ 2,819 $ 3,397 $ 8,713 $ 10,163 The Company has the following indefinite-lived intangible assets recorded in its consolidated balance sheet (in thousands): September 30, December 31, 2015 2014 Trade names $ 7,029 $ 7,029	4. Goodwill and Other Intangible Assets Goodwill Changes in the Company’s goodwill balance for the years ended December 31, 2014 and 2013 are summarized in the table below (in thousands). Balance at December 31, 2012 $ 312,412 Acquired in business combinations 198,124 Foreign currency translation adjustment (2,925 ) Balance at December 31, 2013 $ 507,611 Acquired in business combinations 11,647 Foreign currency translation adjustment (26,098 ) Post-acquisition goodwill adjustment for the Stayz acquisition 511 Balance at December 31, 2014 $ 493,671 Pursuant to its goodwill and intangible assets accounting policy, the Company records goodwill adjustments for the effect on goodwill of changes to net assets and liabilities acquired during the measurement period (up to one year from the date of an acquisition). The goodwill arising from the Stayz acquisition was increased by $511,000 up to $178,288,000 due to certain income taxes and changes in fair value estimates derived from additional information gained during the measurement period. Goodwill adjustments were not significant to the Company’s previously reported operating results or financial position. Therefore, the Company elected not to retrospectively adjust the acquisition date accounting and instead recorded the adjustment in the year ended December 31, 2014. Intangible Assets The Company’s intangible assets, excluding goodwill, consist of intangible assets acquired primarily in business combinations and were recorded at their estimated fair values on the date of acquisition. The finite-lived intangible assets that are being amortized are summarized in the table below (in thousands): December 31, 2014 December 31, 2013 Useful Life Gross Accumulated Net Gross Accumulated Net Trade names and trademarks 10 $ 30,316 $ (8,396 ) $ 21,920 $ 30,066 $ (5,050 ) $ 25,016 Developed technology 2-8 21,293 (13,231 ) 8,062 31,513 (23,646 ) 7,867 Customer relationships 6-14 57,656 (25,512 ) 32,144 80,510 (41,739 ) 38,771 Noncompete agreements and domain names 2-5 2,224 (923 ) 1,301 5,163 (3,181 ) 1,982 Total $ 111,489 $ (48,062 ) $ 63,427 $ 147,252 $ (73,616 ) $ 73,636 Amortization of noncompete agreements is recorded over the term of the agreements. The following table summarizes the amortization expense that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Amortization expense $ 13,916 $ 11,668 $ 12,438 Expected future annual amortization expense for definite-lived intangible assets as of December 31, 2014 is as follows (in thousands): 2015 $ 11,772 2016 9,132 2017 8,042 2018 7,738 2019 7,057 Thereafter 19,686 $ 63,427 The Company has the following indefinite-lived intangible assets recorded in its consolidated balance sheets as of December 31, 2014 and 2013, respectively (in thousands): December 31, 2014 2013 Trademarks, trade names and other $ 7,029 $ 7,029

Property and Equipment, net

Property and Equipment, net	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property and Equipment, net	5. Property and Equipment, net Property and equipment consists of the following at December 31, 2014 and 2013, respectively, (in thousands): December 31, 2014 2013 Computer equipment and purchased software $ 31,566 $ 24,074 Internal-use software and website development costs 36,038 30,523 Furniture and fixtures 7,915 5,999 Leasehold improvements 20,922 13,999 96,441 74,595 Less accumulated depreciation (40,268 ) (34,788 ) $ 56,173 $ 39,807 The following table summarizes the depreciation expense that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Depreciation expense $ 16,926 $ 13,399 $ 11,051

Accrued Expenses

Accrued Expenses	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued Expenses	4. Accrued Expenses The Company’s accrued expenses are comprised of the following (in thousands): September 30, December 31, 2015 2014 Compensation and related benefits $ 19,591 $ 21,413 Taxes 6,810 4,954 Marketing 5,131 4,115 Gift cards 4,103 5,654 Contracting, consulting and professional fees 3,111 3,254 Traveler guarantee 1,246 1,790 Foreign exchange-forward contracts 683 99 Other 9,771 8,976 Total $ 50,446 $ 50,255	6. Accrued Expenses The Company’s accrued expenses are comprised of the following at December 31, 2014 and 2013, respectively (in thousands): December 31, 2014 2013 Compensation and related benefits $ 21,413 $ 21,700 Gift cards 5,654 6,090 Contracting, consulting and professional fees 3,254 4,494 Taxes 4,954 3,425 Marketing 4,115 3,197 Foreign exchange – forward contracts 99 979 Traveler guarantee liability 1,790 956 Other 8,976 13,784 Total $ 50,255 $ 54,625

Convertible Senior Notes

Convertible Senior Notes	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Convertible Senior Notes	5. Convertible Senior Notes Convertible Senior Notes Equity Carrying Value of Convertible Component Senior Notes as of Recorded September 30, December 31, (In thousands) Par Value at Issuance 2015 2014 0.125% Convertible Senior Notes due April 1, 2019 $ 402,500 $ 90,887 (1) $ 329,905 $ 316,181 (1) This amount represents the equity component recorded at the initial issuance of the 0.125% convertible senior notes. In March 2014, the Company issued at par value $402.5 million of 0.125% convertible senior notes (the “Notes”) due April 1, 2019, unless earlier purchased by the Company or converted. Interest is payable semi-annually, in arrears on April 1 and October 1 of each year, commencing October 1, 2014. The Notes are governed by an indenture between the Company, as issuer, and U.S. Bank National Association, as trustee. The Notes are unsecured and do not contain any financial covenants or any restrictions on the payment of dividends, the incurrence of senior debt or other indebtedness or the issuance or repurchase of securities by the Company. If converted, holders will receive cash and/or shares of the Company’s common stock, at the Company’s election. The Company’s intent is to settle the principal amount of the Notes in cash upon conversion. As a result, upon conversion of the Notes, only the amounts payable in excess of the principal amount of the Notes are considered in diluted earnings per share under the treasury stock method. Conversion Initial Free 0.125% Convertible Senior Notes 19.1703 $ 52.16 October 1, 2018 Throughout the term of the Notes, the conversion rate may be adjusted upon the occurrence of certain events as described in the indenture governing the Notes. Holders of the Notes will not receive any cash payment representing accrued and unpaid interest upon conversion of a Note. Accrued but unpaid interest will be deemed to be paid in full upon conversion rather than cancelled, extinguished or forfeited. Holders may convert their Notes under the following circumstances: • during any calendar quarter commencing after June 30, 2014, if, for at least 20 trading days during the 30 consecutive trading day period ending on the last trading day of the immediately preceding calendar quarter, the last reported sales price of the Company’s common stock for such trading day is greater than or equal to 130% of the applicable conversion price for the Notes on each applicable trading day; • during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the Notes is less than 98% of the product of the sale price of the Company’s common stock and the conversion rate; • upon the occurrence of specified corporate transactions described under the indenture governing the Notes, such as a consolidation, merger or binding share exchange; or • at any time on or after October 1, 2018. As of September 30, 2015, the Notes are not convertible. Holders of the Notes have the right to require the Company to purchase with cash all or a portion of the Notes upon the occurrence of a fundamental change, such as a change of control, at a purchase price equal to 100% of the principal amount of the Notes plus accrued and unpaid interest. Following certain corporate transactions that constitute a fundamental change, the Company will increase the conversion rate for a holder who elects to convert the Notes in connection with such make-whole fundamental change. In accounting for the issuance of the Notes, the Company separated the Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated conversion feature. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the par value of the Notes as a whole. The excess of the principal amount of the liability component over its carrying amount (“debt discount”) is amortized to interest expense over the term of the Notes. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the transaction costs related to the Note issuance, the Company allocated the total amount incurred to the liability and equity components based on their relative values. Transaction costs attributable to the liability component are being amortized to expense over the term of the Notes, and transaction costs attributable to the equity component were netted with the equity component in stockholders’ equity. Additionally, the Company recorded a deferred tax liability of $0.8 million in connection with the Notes. The Notes consist of the following (in thousands): September 30, December 31, 2015 2014 Liability component: Principal: 0.125% Convertible Senior Notes $ 402,500 $ 402,500 Less: debt discount, net 0.125% Convertible Senior Notes (72,595 ) (86,319 ) Net carrying amount $ 329,905 $ 316,181 The Notes are included in the consolidated balance sheets within convertible senior notes, net, which is classified as a non-current liability. The debt discount is amortized over the life of the Notes using the effective interest rate method. The total estimated fair value of the Company’s Notes at September 30, 2015 was $293.3 million. The fair value of the Notes was determined based on inputs that are observable in the market (Level 2). Based on the closing price of the Company’s common stock of $26.54 on September 30, 2015, the if-converted value of the Notes was less than their principal amount. Note Hedges To minimize the impact of potential economic dilution upon conversion of the Notes, the Company entered into convertible note hedge transactions with respect to its common stock (the “Note Hedges”). Date Purchase Shares underlying Note Hedges March 2014 $ 85,853 7,716,049 The Note Hedges cover shares of the Company’s common stock at a strike price that corresponds to the initial conversion price of the respective Notes, also subject to adjustment, and are exercisable upon conversion of the Notes. The Note Hedges will expire upon the maturity of the Notes. The Note Hedges are intended to reduce the potential economic dilution upon conversion of the Notes in the event that the market value per share of the Company’s common stock, as measured under the Notes, at the time of exercise is greater than the conversion price of the Notes. The Note Hedges are separate transactions and are not part of the terms of the Notes. Holders of the Notes will not have any rights with respect to the Note Hedges. Warrants Date Proceeds Shares Strike Warrants March 2014 $ 38,278 7,716,049 $ 81.14 Separately, in March 2014, the Company also entered into warrant transactions (the “Warrants”), whereby the Company sold warrants to acquire, subject to anti-dilution adjustments, shares of the Company’s common stock at $81.14 per share. The Warrants have a term of five years from the date of issuance. If the average market value per share of the Company’s common stock for the reporting period, as measured under the Warrants, exceeds the strike price of the Warrants, the Warrants would have a dilutive effect on the Company’s earnings per share if the Company reports net income for the reporting period. The Warrants were anti-dilutive for the period ended September 30, 2015. The Warrants are separate transactions, entered into by the Company and are not part of the terms of the Notes or Note Hedges. Holders of the Notes will not have any rights with respect to the Warrants. Interest Expense The following table sets forth total interest expense recognized related to the Notes (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 0.125% coupon $ 126 $ 126 $ 378 $ 252 Amortization of debt issuance costs 14 13 40 26 Amortization of debt discount 4,641 4,378 13,724 8,694 Total $ 4,781 $ 4,517 $ 14,142 $ 8,972	7. Convertible Senior Notes Convertible Senior Notes (In thousands) Par Value Equity Carrying Value of Convertible December 31, December 31, 0.125% Convertible Senior Notes due April 1, 2019 $ 402,500 $ 90,887 (1) $ 316,181 $ — (1) This amount represents the equity component recorded at the initial issuance of the 0.125% convertible senior notes. In March 2014, the Company issued at par value $402.5 million of 0.125% convertible senior notes (the “Notes”) due April 1, 2019, unless earlier purchased by the Company or converted. Interest is payable semi-annually, in arrears on April 1 and October 1 of each year commencing October 1, 2014. The Notes are governed by an indenture between the Company, as issuer, and U.S. Bank National Association, as trustee. The Notes are unsecured and do not contain any financial covenants or any restrictions on the payment of dividends, the incurrence of senior debt or other indebtedness, or the issuance or repurchase of securities by the Company. If converted, holders will receive cash and/or shares of the Company’s common stock, at the Company’s election. The Company’s intent is to settle the principal amount of the Notes in cash upon conversion. As a result, upon conversion of the Notes, only the amounts payable in excess of the principal amounts of the Notes are considered in diluted earnings per share under the treasury stock method. Conversion Initial Free 0.125% Senior Notes 19.1703 $ 52.16 October 1, 2018 Throughout the term of the Notes, the conversion rate may be adjusted upon the occurrence of certain events as described in the indenture governing the Notes. Holders of the Notes will not receive any cash payment representing accrued and unpaid interest upon conversion of a Note. Accrued but unpaid interest will be deemed to be paid in full upon conversion rather than cancelled, extinguished or forfeited. Holders may convert their Notes under the following circumstances: • during any calendar quarter commencing after June 30, 2014, if, for at least 20 trading days during the 30 consecutive trading day period ending on the last trading day of the immediately preceding calendar quarter, the last reported sales price of the Company’s common stock for such trading day is greater than or equal to 130% of the applicable conversion price for the Notes on each applicable trading day; • during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the Notes is less than 98% of the product of the sale price of the Company’s common stock and the conversion rate; • upon the occurrence of specified corporate transactions described under the indenture governing the Notes, such as a consolidation, merger or binding share exchange; or • at any time on or after October 1, 2018. As of December 31, 2014, the Notes are not yet convertible. Holders of the Notes have the right to require the Company to purchase with cash all or a portion of the Notes upon the occurrence of a fundamental change, such as a change of control, at a purchase price equal to 100% of the principal amount of the Notes plus accrued and unpaid interest. Following certain corporate transactions that constitute a fundamental change, the Company will increase the conversion rate for a holder who elects to convert the Notes in connection with such make-whole fundamental change. In accounting for the issuance of the Notes, the Company separated the Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the par value of the Notes as a whole. The excess of the principal amount of the liability component over its carrying amount (“debt discount”) is amortized to interest expense over the term of the Notes. The equity component is not re-measured as long as it continues to meet the conditions for equity classification. In accounting for the transaction costs related to the Note issuance, the Company allocated the total amount incurred to the liability and equity components based on their relative values. Transaction costs attributable to the liability component are being amortized to expense over the term of the Notes, and transaction costs attributable to the equity component were netted with the equity component in stockholders’ equity. Additionally, the Company recorded a deferred tax liability of $0.8 million in connection with the Notes. The Notes consist of the following (in thousands): December 31, December 31, Liability component: Principal: 0.125% Senior Notes $ 402,500 $ — Less: debt discount, net 0.125% Senior Notes (86,319 ) — Net carrying amount $ 316,181 $ — The Notes are included in the consolidated balance sheets within Convertible senior notes, net, which are classified as a noncurrent liability. The debt discount is amortized over the life of the Notes using the effective interest rate method. The total estimated fair value of the Company’s Notes at December 31, 2014 was $304.3 million. The fair value of the Notes was determined based on inputs that are observable in the market (Level 2). Based on the closing price of the Company’s common stock of $29.78 on December 31, 2014, the if-converted value of the Notes was less than their principal amount. Note Hedges To minimize the impact of potential economic dilution upon conversion of the Notes, the Company entered into convertible note hedge transactions with respect to its common stock (the “Note Hedges”). Date Purchase Shares Note Hedges March 2014 $ 85,853 7,716,049 The Note Hedges cover shares of the Company’s common stock at a strike price that corresponds to the initial conversion price of the respective Notes, also subject to adjustment, and are exercisable upon conversion of the Notes. The Note Hedges will expire upon the maturity of the Notes. The Note Hedges are intended to reduce the potential economic dilution upon conversion of the Notes in the event that the market value per share of the Company’s common stock, as measured under the Notes, at the time of exercise is greater than the conversion price of the Notes. The Note Hedges are separate transactions and are not part of the terms of the Notes. Holders of the Notes will not have any rights with respect to the Note Hedges. Warrants Date Proceeds Shares Strike Warrants March 2014 $ 38,278 7,716,049 $ 81.14 Separately, in March 2014, the Company also entered into warrant transactions (the “Warrants”), whereby the Company sold warrants to acquire, subject to anti-dilution adjustments, shares of the Company’s common stock at $81.14 per share. The Warrants have a term of five years from the date of issuance. If the average market value per share of the Company’s common stock for the reporting period, as measured under the Warrants, exceeds the strike price of the Warrants, the Warrants would have a dilutive effect on the Company’s earnings per share if the Company reports net income. The Warrants were anti-dilutive for the year ended December 31, 2014. The Warrants are separate transactions, entered into by the Company and are not part of the terms of the Notes or Note Hedges. Holders of the Notes will not have any rights with respect to the Warrants. Interest Expense The following table sets forth total interest expense recognized related to the Notes for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 0.125% coupon $ 378 — — Amortization of debt issuance costs 39 — — Amortization of debt discount 13,137 — — Total $ 13,554 $ — $ —

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	6. Commitments and Contingencies Leases The Company leases its facilities and certain office equipment under noncancellable operating leases. The following table summarizes total rental expense (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Rental expense $ 1,733 $ 1,911 $ 5,754 $ 5,134 Guarantees The Company offers two guarantee products to travelers: Basic Rental Guarantee and Carefree Rental Guarantee. The Basic Rental Guarantee is offered to travelers that book a vacation rental property listed on any one of the Company’s websites to protect their vacation rental payments up to $1,000 against Internet fraud. Travelers can also purchase additional protection to cover their vacation rental payments up to $10,000 against Internet fraud, misrepresentation, wrongful denial of entry, wrongful deposit loss or losses from phishing claims by the purchase of the Carefree Rental Guarantee. The Company does not maintain insurance from any third party for claims under these guarantees, and any amounts payable for claims made under these guarantees are payable by the Company. Amounts recorded for estimated future claims under the guarantees are based on historical experience and expectations for future claims. Claim costs related to the Basic Rental Guarantee are recognized in general and administrative expenses in the consolidated statements of operations while claim costs related to the Carefree Rental Guarantee are recognized in cost of revenue. Expected future claims for traveler guarantees, which are presented as a current liability in the Company’s condensed consolidated balance sheets, and changes for the guarantees, are as follows (in thousands): Traveler guarantee liability at December 31, 2013 $ 956 Costs accrued for new and expected future claims 3,576 Guarantee obligations honored (2,742 ) Traveler guarantee liability at December 31, 2014 $ 1,790 Costs accrued for new and expected future claims 1,216 Guarantee obligations honored (1,760 ) Traveler guarantee liability at September 30, 2015 $ 1,246 The Company maintains a guarantee of £5,000,000 (approximately $7,595,000 as of September 30, 2015) to a bank in the United Kingdom for extending credit to the Company in connection with the wholly owned United Kingdom subsidiary’s business of collecting its subscription revenue in advance via credit card payments. Legal From time to time, the Company is involved in litigation relating to claims arising in the ordinary course of business. The Company assesses its potential liability by analyzing specific litigation and regulatory matters using available information. Views on estimated losses are developed by management in consultation with inside and outside counsel, which involves a subjective analysis of potential results and outcomes, assuming various combinations of appropriate litigation and settlement strategies. After taking all of the above factors into account, the Company determines whether an estimated loss from a contingency related to litigation should be accrued by assessing whether a loss is deemed probable and can be reasonably estimated. The Company further determines whether an estimated loss from a contingency related to litigation should be disclosed by assessing whether a material loss is deemed reasonably possible. Such disclosures will include an estimate of the additional loss or range of loss or will state that such an estimate cannot be made. Management believes that there are no claims or actions pending or threatened against the Company, the ultimate disposition of which would have a material impact on the Company’s consolidated financial position, results of operations or cash flows.	8. Commitments and Contingencies Leases The Company leases its facilities and certain office equipment under noncancellable operating leases. Future minimum lease payments under noncancellable operating leases at December 31, 2014 are as follows (in thousands): 2015 $ 8,073 2016 8,487 2017 8,324 2018 7,486 2019 6,601 Thereafter 21,870 Total minimum lease payments $ 60,841 The following table summarizes the total rental expense that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Rental expense $ 6,994 $ 5,202 $ 4,492 Guarantees The Company offers two guarantee products to travelers: Basic Rental Guarantee and Carefree Rental Guarantee. The Basic Rental Guarantee is offered to travelers that book a vacation rental property listed on any one of the Company’s websites to protect their vacation rental payments up to $1,000 against Internet fraud. Travelers may also purchase additional protection to cover 100% of vacation rental payments up to $10,000 against Internet fraud, misrepresentation, wrongful denial of entry, wrongful deposit loss or losses from phishing claims by the purchase of the Carefree Rental Guarantee. The Company does not maintain insurance from any third party for claims under these guarantees, and any amounts payable for claims made under these guarantees are payable by the Company. Amounts recorded for estimated future claims under the guarantees are based on historical experience and estimates of potential future claims are recorded either in cost of revenue or in general and administrative expense in the Company’s consolidated statement of operations depending on whether the expense is related to estimated claims under the Basic Rental Guarantee or to the Carefree Rental Guarantee. Expected future claims for traveler guarantees, which are presented as a current liability in the Company’s consolidated balance sheets, and changes for the guarantees are as follows (in thousands): Traveler guarantee liability at December 31, 2012 $ 566 Costs accrued for new vacation rentals 2,230 Guarantee obligations honored (1,840 ) Traveler guarantee liability at December 31, 2013 $ 956 Costs accrued for new vacation rentals 3,576 Guarantee obligations honored (2,742 ) Traveler guarantee liability at December 31, 2014 $ 1,790 The Company maintains a guarantee of £5,000,000 (approximately $7,800,000 as of December 31, 2014) in favor of a bank in the United Kingdom for extending credit to the Company in connection with the wholly owned United Kingdom subsidiary’s business of collecting its subscription revenue in advance via credit card payments. Legal From time to time, the Company is involved in litigation relating to claims arising in the ordinary course of business. The Company assesses its potential liability by analyzing specific litigation and regulatory matters using available information. Views on estimated losses are developed by management in consultation with inside and outside counsel, which involves a subjective analysis of potential results and outcomes, assuming various combinations of appropriate litigation and settlement strategies. After taking all of the above factors into account, the Company determines whether an estimated loss from a contingency related to litigation should be accrued by assessing whether a loss is deemed probable and can be reasonably estimated. The Company further determines whether an estimated loss from a contingency related to litigation should be disclosed by assessing whether a material loss is deemed reasonably possible. Such disclosures will include an estimate of the additional loss or range of loss or will state that such an estimate cannot be made. Management believes that there are no claims or actions pending or threatened against the Company, the ultimate disposition of which would have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	7. Stock-Based Compensation During the three and nine months ended September 30, 2015, the Company issued an aggregate of 502,383 and 1,686,767 restricted stock units, respectively, under its 2011 Equity Incentive Plan (the “2011 Plan”), for an aggregate fair value of $14,261,000 and $49,261,000, respectively. Additionally, during the three and nine months ended September 30, 2015, the Company issued an aggregate of 83,644 and 947,986 options, respectively, to purchase common stock under the 2011 Plan for an aggregate fair value of $958,000 and $9,995,000, respectively. The following table summarizes the total stock-based compensation expense (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Cost of revenue $ 881 $ 847 $ 2,615 $ 2,415 Product development 3,931 3,485 10,769 9,589 Sales and marketing 3,152 2,763 9,003 7,868 General and administrative 4,654 5,576 15,100 15,710 Total $ 12,618 $ 12,671 $ 37,487 $ 35,582	9. Stockholders’ Equity and Stock-Based Compensation Common Stock The Company’s amended and restated certificate of incorporation, as amended in July 2011, authorizes 350,000,000 shares of common stock with a par value of $0.0001 per share. At December 31, 2014 and December 31, 2013, there were 94,515,344 and 92,361,069 shares of common stock issued and outstanding, respectively. Additionally, the amended certificate of incorporation authorizes the Company’s board of directors, without action by stockholders, to designate and issue up to 10,000,000 shares of preferred stock in one or more series. The board of directors may also designate the rights, preferences and privileges of each series of preferred stock, any or all of which may be greater than the rights of the common stock. Follow-on Offering On December 17, 2013, the Company closed a follow-on offering of 6,921,424 shares of its common stock, at $37.00 per share, before underwriting discounts and commissions. The Company sold 5,500,000 shares and existing stockholders sold an aggregate of 1,421,424 shares, including 902,794 shares as a result of the underwriters’ exercise of their over-allotment option to purchase additional shares. The offering generated net proceeds to the Company of approximately $195.3 million, after deducting underwriting discounts and other expenses incurred by the Company for the sale of common stock. The offer and sale of all of the shares in the offering were registered under the Securities Act pursuant to a registration statement on Form S-3 ASR, which became automatically effective on December 12, 2013. The Company did not receive any proceeds from the sale of shares by the selling stockholders. Stock Compensation Plans The Company maintains two stock-based compensation plans, the 2004 Stock Option Plan (the “2004 Plan”) and the 2011 Equity Incentive Plan (the “2011 Plan”), which are described below. 2004 Plan At December 31, 2014, there were 3,475,715 options outstanding under the 2004 Plan. Following the effectiveness of the Company’s 2011 Plan in May 2011, no further awards have been made under the 2004 Plan, although each option previously granted under the 2004 Plan will remain outstanding subject to its terms. Any such shares of common stock that are subject to awards under the 2004 Plan which are forfeited or lapse unexercised and would otherwise have been returned to the share reserve under the 2004 Plan instead will be available for issuance under the 2011 Plan. 2011 Plan In May 2011, the Company adopted the 2011 Plan, providing for the granting of incentive stock options, as defined by the Internal Revenue Code, to employees and for the grant of non-statutory stock options, stock appreciation rights, restricted stock, restricted stock units, performance units and performance shares to employees, directors and consultants. The 2011 Plan also provides for the automatic grant of option awards to our non-employee directors. Shares of common stock reserved for issuance under the 2011 Plan consist of 20,932,095 shares of common stock. In addition, the number of shares available for issuance under the 2011 Plan will be increased annually on the first day of the Company’s fiscal year by an amount equal to the least of (a) four percent of the outstanding shares of the Company’s common stock as of the last day of the Company’s immediately preceding fiscal year or (b) such other amount as the Company’s board of directors may determine. At December 31, 2014, there were 4,124,581 options and 2,854,955 restricted stock units outstanding under the 2011 Plan. Stock Option Activity A summary of the Company’s stock option activity under all Plans is as follows: Number of Weighted Weighted Aggregate (years) (in thousands) Outstanding at December 31, 2012 10,404,703 $ 17.37 7.5 $ 57,020 Granted 1,756,630 30.18 Exercised (3,186,491 ) 15.12 Forfeited (474,695 ) 22.87 Cancelled (20,885 ) 23.03 Outstanding at December 31, 2013 8,479,261 $ 20.49 7.1 $ 172,921 Granted 972,865 35.50 Exercised (1,615,116 ) 15.84 Forfeited (236,714 ) 26.66 Cancelled — — Outstanding at December 31, 2014 7,600,296 $ 23.20 6.8 $ 57,663 Vested and expected to vest At December 31, 2013 8,226,494 $ 20.31 7.1 $ 169,248 At December 31, 2014 7,433,326 $ 23.02 6.8 $ 57,447 Exercisable options At December 31, 2013 4,583,432 $ 16.82 6.2 $ 110,286 At December 31, 2014 5,079,091 $ 20.06 6.1 $ 51,494 The Company issues shares from the 2004 Plan and the 2011 Plan reserves upon the exercise of stock options. Shares of common stock reserved and available for future stock option grants under the 2011 Plan were 13,952,559 shares at December 31, 2014. The Company received $25,386,000 and $48,473,000 in cash from option exercises under the respective Plans in 2014 and 2013, respectively. The Company issued shares from amounts reserved under the respective Plans upon the exercise of these stock options. The Company does not currently expect to repurchase shares from any source to satisfy such obligation under any of the Company’s stock option Plans. The Company recognized a tax benefit of approximately $2,743,000, $8,226,000 and $7,122,000 from the exercise of stock options during the years ended December 31, 2014, 2013 and 2012, respectively. These tax benefits have been recorded in additional paid-in capital on the Company’s consolidated balance sheet as of December 31, 2014 and 2013. The weighted average grant date fair value of the options and restricted stock are summarized as follows: Year Ended December 31, 2014 2013 2012 Per share of options granted $ 13.46 $ 13.81 $ 12.07 Per share of restricted stock and restricted stock units granted $ 36.33 $ 29.36 $ 24.88 The aggregate intrinsic value of stock options exercised, represented in the stock option activity table above, was approximately $39,140,000, $52,949,000 and $40,394,000 during the years ended December 31, 2014, 2013 and 2012, respectively. During 2014, 1,649,456 stock options vested with a weighted average grant date fair market value of $12.05 per share. Restricted Stock Activity A summary of the Company’s restricted stock activity under the 2004 Plan and 2011 Plan is as follows: Number of Unvested balances at December 31, 2012 806,317 Awards granted 1,658,132 Awards vested (241,517 ) Awards forfeited (185,037 ) Unvested balances at December 31, 2013 2,037,895 Awards granted 1,634,392 Awards vested (565,733 ) Awards forfeited (251,599 ) Unvested balances at December 31, 2014 2,854,955 During 2014, 565,733 restricted stock awards and units vested with a weighted average grant date fair market value of $27.46 per share. Accounting for Stock-Based Compensation The Company uses the Black-Scholes option pricing model in valuing its stock options. The Black-Scholes model requires estimates regarding risk-free rate of return, dividend yields, expected term of the award, volatility and estimated forfeitures of awards during the service period. The risk-free interest rate assumption used by the Company is based on observed market interest rates appropriate for the term of the Company’s employee options. During the years ended December 31, 2014, 2013 and 2012, the Company estimated expected term based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior. The dividend yield assumption is based on historical and expected dividend payouts. The Company determined expected volatility of options granted using an average of the historical volatility measures of comparable companies from a representative industry peer group. The Company uses historical data to estimate pre-vesting option forfeitures and records stock-based compensation expense only for those awards that are expected to vest. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock-based compensation expense to be recognized in future periods. For options granted, the Company amortizes the fair value on a straight-line basis over the vesting period of the options. The fair value of stock option grants has been estimated at the date of grant using the Black–Scholes option pricing model with the following weighted average assumptions: Year Ended December 31, 2014 2013 2012 Risk-free interest rate 1.62% to 1.78% 0.65% to 1.41% 0.78% to 1.32% Expected term 4.93 to 5.10 years 5.32 to 5.57 years 5.59 to 5.83 years Dividend yield 0.00% 0.00% 0.00% Expected volatility 38.70% to 42.50% 46.90% to 50.80% 50.60% to 55.40% The following table summarizes the total stock-based compensation expense for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Cost of revenue $ 3,245 $ 3,064 $ 2,675 Product development 13,174 9,515 5,642 Sales and marketing 10,805 8,488 6,629 General and administrative 21,294 16,820 12,087 $ 48,518 $ 37,887 $ 27,033 Total gross unrecognized compensation cost related to nonvested stock options and restricted stock was $95,989,000 and $84,248,000 as of December 31, 2014 and 2013, respectively. The Company expects to recognize the costs as of December 31, 2014 over a weighted average period of 2.36 years.

Redeemable Noncontrolling Inter

Redeemable Noncontrolling Interests	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Noncontrolling Interest [Abstract]
Redeemable Noncontrolling Interests	8. Redeemable Noncontrolling Interests During the year ended December 31, 2013, the Company acquired 68.5% of the outstanding stock of Travelmob Pte. Ltd. (“travelmob”) and 55% of the outstanding stock of Bookabach Limited. During the year ended December 31, 2014, the Company acquired an additional 20% of the outstanding equity of Bookabach Limited, increasing its ownership to 75%. The redeemable noncontrolling interests are reported on the condensed consolidated balance sheets as redeemable noncontrolling interests. The Company recognizes changes to the redemption value of noncontrolling interests as they occur by adjusting the carrying value to estimated redemption value at the end of each reporting period. Changes in the Company’s redeemable noncontrolling interests are summarized in the table below (in thousands): Balance at December 31, 2013 $ 10,584 Net loss attributable to noncontrolling interests (1,839 ) Changes to redemption value of noncontrolling interests 2,421 Repurchase of redeemable noncontrolling interests (1,461 ) Currency translation adjustments 37 Balance at December 31, 2014 $ 9,742 Net loss attributable to noncontrolling interests (1,623 ) Changes to redemption value of noncontrolling interests 914 Balance at September 30, 2015 $ 9,033 In October 2015, the Company acquired the remaining outstanding equity interest of travelmob (see Note 12).	10. Redeemable Noncontrolling Interests During the year ended December 31, 2013, the Company acquired 68.5% of the outstanding stock of travelmob Pte. Ltd. and 55% of the outstanding stock of Bookabach Limited. During the year ended December 31, 2014, the Company acquired 20% of the outstanding equity held by the remaining shareholders of Bookabach Limited. The redeemable noncontrolling interests are reported on the Consolidated Balance Sheets in mezzanine equity in “Redeemable noncontrolling interests.” The Company recognizes changes to the redemption value of noncontrolling interests as they occur and adjusts the carrying value to equal the redemption value at the end of each reporting period accordingly. Changes in the Company’s redeemable noncontrolling interests for the year ended December 31, 2014 and 2013 are as follows (in thousands): Balance at December 31, 2012 $ — Fair value at acquisition 10,966 Net loss attributable to noncontrolling interests (395 ) Currency translation adjustments 13 Balance at December 31, 2013 $ 10,584 Net loss attributable to noncontrolling interests (1,839 ) Changes to redemption value of noncontrolling interests 2,421 Repurchase of redeemable noncontrolling interests (1,461 ) Currency translation adjustments 37 Balance at December 31, 2014 $ 9,742

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Equity [Abstract]
Accumulated Other Comprehensive Loss	9. Accumulated Other Comprehensive Loss Accumulated other comprehensive loss consists of the following (in thousands): September 30, December 31, 2015 2014 Foreign currency translation adjustments $ (56,276 ) $ (27,252 ) Unrealized losses on short-term investments (183 ) (801 ) Defined benefit pension plan adjustments (4,149 ) — Total $ (60,608 ) $ (28,053 )	11. Accumulated Other Comprehensive Loss Accumulated other comprehensive loss consists of the following at December 31, 2014 and 2013, respectively (in thousands): December 31, 2014 2013 Foreign currency translation $ (27,252 ) $ (6,728 ) Unrealized losses on short-term investments (801 ) (19 ) Total $ (28,053 ) $ (6,747 )

Income Taxes

Income Taxes	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes The following table summarizes the total income tax expense that the Company recorded, and the related effective tax rate, for the three and nine months ended September 30, 2015 and 2014 (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Income tax expense $ 5,625 $ 845 $ 9,757 $ 5,909 Effective tax rate 36.3 % 13.9 % 65.1 % 31.5 % At September 30, 2015, the Company’s effective tax rate estimate for the year ending December 31, 2015 differed from the statutory rate primarily due to losses in certain foreign jurisdictions for which a benefit cannot be recorded at this time, non-deductible stock compensation charges and state taxes, which is offset by the effect of different statutory tax rates in foreign jurisdictions and certain items recorded discretely in the nine months ended September 30, 2015. Those discrete items include a tax benefit due to disqualifying dispositions of incentive stock options, a tax benefit due to an income tax reserve release, a tax benefit for adjustments to the recognized value of the Company’s federal and Texas research and experimentation tax credit carryforwards and a tax benefit of $0.4 million related to a correction of an immaterial prior period transfer pricing error, offset by tax expense related to the amortization of tax charges on the intercompany sale of assets that were deferred in prior periods. The effective tax rate for the three months ended September 30, 2015 is lower than the effective tax rate estimated for the full year ending December 31, 2015 due to higher income before income taxes in the three months as well as the mix of earnings between income and loss jurisdictions. On July 27, 2015, in Altera Corp. v. Commissioner, the U.S. Tax Court issued a taxpayer-favorable opinion related to the treatment of stock-based compensation expense in an intercompany cost-sharing arrangement. A final decision has yet to be issued by the Tax Court due to other outstanding issues related to the case, and the decision is subject to appeal by the Internal Revenue Service. At this time, the U.S. Department of the Treasury has not withdrawn the requirement to include stock-based compensation from its regulations. The Company has reviewed this case and its impact and has concluded that no adjustment to the consolidated financial statements is appropriate at this time. The Company will continue to monitor ongoing developments and potential impacts to the condensed consolidated financial statements. At September 30, 2014, the Company’s effective tax rate estimate differed from the statutory rate primarily due to non-deductible stock compensation charges and state taxes, which was partially offset by the effect of different statutory tax rates in foreign jurisdictions and certain items recorded discretely in the nine months ended September 30, 2014. Those discrete items include a tax benefit due to disqualifying dispositions of incentive stock options, a tax benefit for a state tax apportionment change related to a prior period, a tax benefit for adjustments to the recognized value of our federal and Texas research and experimentation tax credit carryforwards, and a tax benefit resulting from the filing of certain 2013 tax returns, offset by tax expense related to the amortization of tax charges on the intercompany sale of assets that were deferred in prior periods. In addition, the merger of our wholly owned subsidiaries in Spain in the three months ended September 30, 2014 resulted in tax basis intangibles which will be deductible in future periods, with a tax benefit of $2.5 million recorded discretely.	12. Income Taxes Income before income taxes includes the following components (in thousands): Year Ended December 31, 2014 2013 2012 Domestic $ 15,523 $ 27,817 $ 19,934 Foreign 5,716 1,198 8,202 Total $ 21,239 $ 29,015 $ 28,136 The income tax expense (benefit) is comprised of the following (in thousands): Year Ended December 31, 2014 2013 2012 Current Federal $ — $ — $ — State 250 1,116 1,105 Foreign 5,999 4,771 9,625 Deferred Federal 5,502 7,733 7,976 State (831 ) 98 (524 ) Foreign (5,879 ) (1,511 ) (5,425 ) Change in valuation allowance 2,231 (483 ) 418 $ 7,272 $ 11,724 $ 13,175 During the three months ended December 31, 2014, the Company identified immaterial prior period accounting errors related to intercompany transactions and a Swiss foreign tax credit. The adjustments were not material to any prior period results of operations. Therefore, the Company recorded the correction in the same quarter it was identified, which increased income tax expense by approximately $796,000 during the three months ended December 31, 2014. The adjustments had no impact on cash flows from operations or total cash flows for the prior or current period. Deferred income taxes reflect the net effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Deferred tax assets (liabilities) consist of the following (in thousands): December 31, 2014 2013 Deferred tax assets: Net operating loss carryforward $ 6,816 $ 6,760 Tax credits 1,082 551 Accrued liabilities 8,960 6,615 Stock compensation 16,621 11,143 Gift card deferred revenue and redemption liability 1,451 1,346 Other deferred revenue 1,413 1,304 Other 959 310 Total deferred tax assets 37,302 28,029 Deferred tax liabilities: Intangible assets (37,095 ) (34,473 ) Property and equipment (12,170 ) (6,530 ) Prepaid expenses (540 ) (907 ) Other (1,339 ) (536 ) Total deferred tax liabilities (51,144 ) (42,446 ) Valuation allowance (2,463 ) (362 ) Net deferred tax liabilities $ (16,305 ) $ (14,779 ) In August 2013, in a series of transactions, the Company acquired 68.5% of the outstanding stock of travelmob Pte. Ltd. (see Note 3). A net deferred tax liability of approximately $513,000 was recorded upon the acquisition, primarily related to acquired intangibles, net of acquired net operating losses. In November 2013, the Company acquired 55% of the outstanding stock of Bookabach Limited (see Note 3). A net deferred tax liability of approximately $228,000 was recorded upon the acquisition, primarily related to acquired intangibles. In November 2014, the Company acquired an additional 20% of the outstanding stock of Bookabach Limited. In December 2013, the Company acquired 100% of the outstanding stock of Stayz Pty Limited (see Note 3). A net deferred tax liability of approximately $5,313,000 was recorded upon the acquisition, primarily related to acquired intangibles. Additionally, as a result of the acquisition, the Company released approximately $1,397,000 of valuation allowance against the net deferred tax assets of the Company’s existing Australian subsidiary based on revised estimates of future taxable income including Stayz. In March 2014, the Company acquired 100% of the outstanding stock of Glad to Have You, Inc. (see Note 3). A net deferred tax liability of approximately $1,653,000 was recorded upon the acquisition, primarily related to acquired intangibles, net of acquired net operating losses. A valuation allowance is established if, based on the Company’s review of both positive and negative evidence, it is more likely than not that all or a portion of the deferred tax asset will not be realized. The Company maintained a valuation allowance of approximately $2,463,000 and $362,000 at December 31, 2014 and December 31, 2013, respectively, primarily related to the uncertainty of the utilization of certain loss carryforwards as well as the inability to realize the benefit of basis differences in certain acquired intangible assets. After reviewing both positive and negative evidence, the Company determined that it is not more likely than not that the deferred tax assets of the Company’s subsidiaries in Singapore and Switzerland will be realized and recorded a valuation allowance against these assets of $1,920,000 in the year ended December 31, 2014 compared to $0 in the year ended December 31, 2013. There can be no assurance that the Company will meet its expectations of future taxable income. As a result, the amount of the deferred tax assets considered realizable could be reduced if estimates of future taxable income are reduced. Such an occurrence could materially adversely affect the Company’s results of operations and financial condition. The Company will continue to evaluate the ability to realize, by jurisdiction, its deferred tax assets and related valuation allowances. The following is a summary of the Company’s loss carryforwards and their expiration at December 31, 2013 and 2014, respectively (in thousands): December 31, Expiration 2014 2013 Federal loss carryforwards 2025-2034 $ 15,722 $ 8,474 State loss carryforwards 2025-2034 396 447 Federal research and development credit carryforwards 2027-2034 8,386 6,050 State research and development credit carryforwards 2034 1,857 498 Texas margin tax credit carryforwards Indefinite 310 310 Foreign loss carryforwards 2018-Indefinite (1) 26,046 25,690 Foreign local loss carryforwards 2018-2020 517 686 Federal foreign tax credit carryforwards 2020-2024 1,351 1,342 (1) Of the Company’s foreign net operating loss carryforwards, $11,697,000 will expire between 2018 and 2030 if not utilized, and $14,349,000 will carryforward indefinitely. The Company expects to record a credit to additional paid-in capital upon utilization of federal net operating loss and credit carryforwards of $10,323,000 and a credit to additional paid-in capital upon utilization of foreign net operating loss carryforwards of $750,000. In addition, all of the federal research and development tax credits will result in a credit to additional paid-in-capital when realized. Under the Tax Reform Act of 1986, the amount of net operating losses and tax credits that can be carried forward may be limited in certain circumstances. Events that may cause changes in the Company’s tax carryovers include, but are not limited to, a cumulative ownership change of more than 50.0% over a three-year period. Certain of the Company’s operating losses that can be utilized in any one taxable year may be limited by future ownership changes. Currently, such a limitation exists on the net operating loss that was acquired in the Escapia, Second Porch and Glad to Have You acquisitions. A valuation allowance has been recorded to reduce the deferred tax asset to the value that the Company believes is more likely than not to be realized. A limitation also exists for losses attributable to the period of time before the February 1, 2005 Series A preferred stock financing transaction due to the deemed ownership change that occurred upon the issuance of those shares. The Company has not recorded a benefit for approximately $382,000 of net operating loss carryforwards that will expire unused. The following is a reconciliation of the amount of the income tax expense that results from applying the federal statutory income tax rate to income before income taxes to the reported income tax expense (in thousands): Year Ended December 31, 2014 2013 2012 Federal tax expense at statutory rate $ 7,433 $ 10,155 $ 9,848 State taxes, net of federal tax benefit (552 ) 958 647 Foreign tax rate differential (2,166 ) (1,191 ) (2,481 ) Deferred charges 1,908 1,959 1,582 Stock compensation 2,430 566 1,679 Research and development credit (2,346 ) (3,220 ) — Tax basis in Spanish intangibles (2,770 ) — — Non-deductible expenses 331 2,342 355 Other activity in unrecognized tax benefits 816 540 2,325 Other (43 ) 98 (1,198 ) Net increase (decrease) in valuation allowance 2,231 (483 ) 418 $ 7,272 $ 11,724 $ 13,175 There was a tax benefit of $2,770,000 recorded in the year ended December 31, 2014 related to tax basis intangibles resulting from the merger of wholly owned subsidiaries of the Company in Spain. Deferred U.S. income taxes and foreign withholding taxes are not provided on the undistributed cumulative earnings of foreign subsidiaries because those earnings are considered to be permanently reinvested in those operations. Any permanently reinvested earnings could become subject to additional U.S. taxes in certain circumstances (subject to an adjustment for foreign tax credits) and foreign withholding taxes if remitted to HomeAway, Inc. The determination of the amount of unrecognized tax liability is not practicable because of the complexities associated with multiple hypothetical calculations. There was approximately $28,012,000, $16,741,000 and $20,681,000 of cumulative earnings in the Company’s foreign subsidiaries as of December 31, 2014, 2013 and 2012, respectively. The Company follows the guidance on accounting for uncertainty in income taxes, which prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return and also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. The aggregate changes in the balance of unrecognized tax benefits were as follows, excluding interest and penalties (in thousands): (in thousands) Year Ended December 31, 2014 2013 2012 Balance, beginning of year $ 7,555 $ 5,590 $ 3,658 Increases for tax positions related to the current year 2,130 1,013 1,815 Increases for tax positions related to prior years 2,166 1,702 1,135 Decreases for tax positions related to prior years (556 ) (369 ) (739 ) Reductions due to lapsed statute of limitations (1,221 ) (381 ) (279 ) Balance, end of year $ 10,074 $ 7,555 $ 5,590 Included in the balance of unrecognized tax benefits at December 31, 2014, 2013, and 2012 are $3,663,000, $3,177,000, and $1,242,000, respectively, of unrecognized tax benefits that are offset against related deferred tax assets. If the Company were to recognize the unrecognized tax benefits as of December 31, 2014, 2013, and 2012, $9,122,000, $7,555,000, and $5,265,000, respectively, would impact the effective tax rate. Management believes that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with management’s expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs. Although timing of the resolution and closure of audits is not certain, as of December 31, 2014, there were approximately $1,611,000 of unrecognized tax benefits in several jurisdictions that the Company expects could decrease over the next 12 months due to the expiration of the respective statutes of limitation and $726,000 that could change over the next 12 months due to the conclusion of tax audits. The Company includes interest and penalties related to unrecognized tax benefits as a component of income tax expense in the Consolidated Statement of Operations. Accrued interest and penalties are included within the related tax liability line in the consolidated balance sheet and were insignificant in all periods presented. As of December 31, 2014, in the United States, the tax years 2011 through 2013 remain open to examination in the federal jurisdiction and most state jurisdictions. Tax years 2005 through 2010 remain open to adjustment due to net operating losses carried forward into open tax years. HomeAway, Inc. is currently under audit in the U.S., and two of the Company’s UK subsidiaries are currently under audit. Internationally, the following years remain open to examination: Jurisdiction Open Tax Years Germany 2011-2014 France 2012-2014 Brazil 2009-2014 United Kingdom 2011-2014 Switzerland 2010-2014 Australia 2010-2014 Spain 2010-2014 Thailand 2013-2014 Singapore 2011-2014 New Zealand 2010-2014 Colombia 2013-2014 Italy 2013-2014

Net Income Per Share Attributab

Net Income Per Share Attributable to HomeAway, Inc.	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net Income Per Share Attributable to HomeAway, Inc.	11. Net Income Per Share Attributable to HomeAway, Inc. The following table sets forth the computation of basic and diluted net income per share of common stock (in thousands, except per share amounts): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Numerator Net income attributable to HomeAway, Inc. $ 10,417 $ 4,912 $ 5,942 $ 13,222 Denominator Weighted average common shares outstanding - basic 95,716 94,106 95,162 93,507 Dilutive effect of stock options, warrants and restricted stock units 1,972 2,283 2,227 2,851 Weighted average common shares outstanding - diluted 97,688 96,389 97,389 96,358 Net income per share attributable to HomeAway, Inc.: Basic $ 0.11 $ 0.05 $ 0.06 $ 0.14 Diluted $ 0.11 $ 0.05 $ 0.06 $ 0.14 The following common equivalent shares were excluded from the calculation of diluted net loss per share attributable to HomeAway, Inc. as their inclusion would have been anti-dilutive (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Stock options 3,295 2,604 3,089 2,038 Restricted stock units 547 62 21 49 Warrants 7,716 7,716 7,716 7,716 Total common equivalent shares excluded 11,558 10,382 10,826 9,803	13. Net Income Per Share Attributable to HomeAway, Inc. The following table sets forth the computation of basic and diluted net income per share attributable to HomeAway, Inc. (in thousands except share and per share amounts): Year Ended December 31, 2014 2013 2012 Numerator Net income attributable to HomeAway, Inc. $ 13,384 $ 17,686 $ 14,961 Denominator Weighted average common shares outstanding-basic 93,727 85,378 82,382 Dilutive effect of stock options, warrants and restricted stock units 2,754 2,881 2,560 Weighted average common shares outstanding-diluted 96,481 88,259 84,942 Net income per share attributable to HomeAway, Inc.: Basic $ 0.14 $ 0.21 $ 0.18 Diluted $ 0.14 $ 0.20 $ 0.18 The following common equivalent shares were excluded from the calculation of net income per share attributable to HomeAway, Inc. as their inclusion would have been anti-dilutive (in thousands): Year Ended December 31, 2014 2013 2012 Stock options 2,178 3,153 5,151 Restricted stock units 57 4 7 Warrants 7,716 — — Total common equivalent shares excluded 9,951 3,157 5,158

Domestic and Foreign Operations

Domestic and Foreign Operations	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Domestic and Foreign Operations	14. Domestic and Foreign Operations The Company has operations in domestic and foreign regions, specifically in Europe, South America and the Asia Pacific region. Information about these operations is presented below (in thousands): Year Ended December 31, 2014 2013 2012 Revenue: United States $ 262,412 $ 211,473 $ 173,078 France 59,306 52,222 42,451 United Kingdom 48,996 41,231 35,656 Australia 25,888 3,300 1,141 Germany 24,410 20,719 16,194 Other international 25,750 17,544 11,884 Total revenue $ 446,762 $ 346,489 $ 280,404 Year Ended December 31, 2014 2013 2012 Identifiable long-lived tangible assets: United States $ 85,116 $ 43,673 $ 32,936 International 10,167 8,472 7,431 Total identifiable long-lived tangible assets $ 95,283 $ 52,145 $ 40,367 Revenue attributed to the U.S. and international geographies are based upon the country in which the selling subsidiary of the Company is located. Identifiable long-lived assets attributed to the U.S. and international geographies are based upon the country in which the asset is located or owned.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	15. Employee Benefit Plans The Company administers various employer-sponsored retirement plans in Colombia, France, Germany, Italy, Spain, Switzerland, the United Kingdom and the United States. The various plans allow for employer matching contributions to be made into the plans. Our total expense for these retirement plans is presented below (in thousands): Year Ended December 31, 2014 2013 2012 Retirement plan contribution expense $ 1,975 $ 1,907 $ 1,185

Guarantor Footnote

Guarantor Footnote	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Subsequent Events [Abstract]
Guarantor Footnote	13. Guarantor and Non-Guarantor Supplemental Financial Information On November 4, 2015, HomeAway, Inc. (“HomeAway” or the “Company”), Expedia, Inc., a Delaware corporation (“Expedia”), and HMS 1 Inc., a Delaware corporation and a direct 100 percent owned subsidiary of Expedia (“Purchaser”), entered into an Agreement and Plan of Reorganization (the “Merger Agreement”). Pursuant to the Merger Agreement, on the terms and subject to the conditions set forth in the Merger Agreement, Purchaser commenced an exchange offer (the “Offer”) to purchase any and all of the outstanding shares of HomeAway common stock. The exchange offer is scheduled to expire at 12:00 midnight, Eastern Standard Time, at the end of December 14, 2015. As soon as practicable following the consummation of the Offer, on the terms and subject to the conditions set forth in the Merger Agreement, (i) Purchaser will be merged with and into HomeAway (the “First Merger”), with HomeAway surviving the First Merger and (ii) immediately following the First Merger, HomeAway will be merged with and into Expedia (the “Second Merger” and together with the First Merger, the “Mergers”), with Expedia surviving the Second Merger. On December 1, 2015, Expedia entered into an agreement for the private placement of $750 million of 5.000% senior unsecured notes due 2026 (the “Notes”). The private placement of the Notes was completed on December 8, 2015. The Notes were issued pursuant to an indenture dated as of December 8, 2015 (the “Indenture”) between Expedia, the subsidiary guarantors party thereto and The Bank of New York Mellon Trust Company, N.A., as trustee of the Notes (the “Trustee”). Pursuant to the Indenture, the Notes are required to be guaranteed by certain of Expedia’s domestic subsidiaries and certain future domestic subsidiaries of Expedia. At the effective time of the First Merger, HomeAway’s 100 percent owned domestic subsidiaries (other than Dwellable, Inc.) will enter into a supplement to the Indenture (the “Supplemental Indenture”) whereby HomeAway’s 100 percent owned domestic subsidiaries (other than Dwellable, Inc.) will become guarantors of the Notes. At the effective time of the Second Merger, HomeAway’s 100 percent owned domestic subsidiaries (other than Dwellable, Inc.) will remain guarantors of the Notes. HomeAway will have merged with and into Expedia, which is an obligor under the Notes. Under the Indenture, the guarantees are full, unconditional and joint and several with the exception of certain customary automatic subsidiary release conditions. Pursuant to a registration rights agreement dated as of December 8, 2015 (the “Registration Rights Agreement”) among Expedia, Goldman, Sachs & Co., J.P. Morgan Securities LLC and Merrill Lynch, Pierce, Fenner & Smith Incorporated, as representatives of the several initial purchasers of the Notes, Expedia agreed to use commercially reasonable best efforts to (i) file an exchange offer registration statement with respect to an offer to exchange the Notes and the guarantees thereof for substantially identical Notes and guarantees that are registered under the Securities Act (the “Exchange Offer”); (ii) cause the Exchange Offer registration statement to become effective; and (iii) consummate the Exchange Offer or, if required in lieu thereof, file a shelf registration statement and have it declared effective, in each case, within 365 days of issuance of the Notes. If Expedia fails to satisfy certain of its obligations under the Registration Rights Agreement (a “Registration Default”), it will be required to pay additional interest of 0.25% per annum to the holders of the Notes until such Registration Default is cured. In contemplation of the closing of the Mergers and the ultimate registration of the Notes, the Company has prepared the condensed consolidated financial information shown below to reflect the effectiveness of the Mergers and HomeAway’s 100 percent owned domestic subsidiaries (other than Dwellable, Inc.) as guarantors of the Notes (and HomeAway as an obligor of the Notes as a result of its merger with and into Expedia). Condensed Consolidating Balance Sheet September 30, 2015 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 160,444 $ 16,647 $ 124,202 $ — $ 301,293 Short-term investments 618,343 — — — 618,343 Accounts receivable, net — 14,976 9,043 — 24,019 Income tax receivable 796 — 884 — 1,680 Prepaid expenses and other current assets 4,525 10,532 3,212 — 18,269 Deferred tax assets 7,660 123 1,601 — 9,384 Intercompany receivable 790 13,700 2,482 (16,972 ) — Total current assets 792,558 55,978 141,424 (16,972 ) 972,988 Investment in subsidiaries 360,176 — — (360,176 ) — Property and equipment, net 11,259 43,695 5,819 — 60,773 Goodwill — 210,300 249,749 — 460,049 Intangible assets, net 1,628 29,234 27,141 — 58,003 Non-marketable investments 37,506 — 2,043 — 39,549 Deferred tax assets — — 880 — 880 Other non-current assets 188 318 5,789 — 6,295 Intercompany loans receivable 109,620 18,336 — (127,956 ) — Total assets $ 1,312,935 $ 357,861 $ 432,845 $ (505,104 ) $ 1,598,537 Liabilities, redeemable noncontrolling interests and stockholders’ equity Current liabilities: Accounts payable $ — $ 4,280 $ 3,207 $ — $ 7,487 Income tax payable 307 (307 ) 907 — 907 Accrued expenses 183 28,800 21,463 — 50,446 Deferred revenue — 125,982 67,787 — 193,769 Intercompany payable 231 3,051 13,690 (16,972 ) — Total current liabilities 721 161,806 107,054 (16,972 ) 252,609 Convertible senior notes, net 329,905 — — — 329,905 Deferred revenue, less current portion — 2,943 38 — 2,981 Deferred tax liabilities 20,167 1,775 2,434 — 24,376 Other non-current liabilities 2,326 8,918 8,573 — 19,817 Intercompany loans payable — — 127,956 (127,956 ) — Total liabilities 353,119 175,442 246,055 (144,928 ) 629,688 Redeemable noncontrolling interests — — 9,033 — 9,033 Total stockholders’ equity 959,816 182,419 177,757 (360,176 ) 959,816 Total liabilities, redeemable noncontrolling interests and stockholders’ equity $ 1,312,935 $ 357,861 $ 432,845 $ (505,104 ) $ 1,598,537 Condensed Consolidating Statement of Operations Three months ended September 30, 2015 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 64,319 $ 43,962 $ (1,797 ) $ 106,484 Other — 22,688 2,217 (707 ) 24,198 Total revenue — 87,007 46,179 (2,504 ) 130,682 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 40 16,671 5,154 (2,504 ) 19,361 Product development 17 19,307 2,734 — 22,058 Sales and marketing 110 20,028 22,825 — 42,963 General and administrative 1,126 17,451 5,297 — 23,874 Amortization expense 63 1,327 1,429 — 2,819 Intercompany (income) expense, net — (3,541 ) 3,541 — — Operating income (loss) (1,356 ) 15,764 5,199 — 19,607 Other income (expense): Equity in earnings of consolidated subsidiaries 14,092 — — (14,092 ) — Interest expense (4,718 ) — (288 ) 288 (4,718 ) Interest income 999 86 130 (288 ) 927 Other expense, net 151 (185 ) (304 ) — (338 ) Total other income (expense), net 10,524 (99 ) (462 ) (14,092 ) (4,129 ) Income before income taxes 9,168 15,665 4,737 (14,092 ) 15,478 Income tax (expense) benefit 1,249 (5,962 ) (912 ) — (5,625 ) Net income 10,417 9,703 3,825 (14,092 ) 9,853 Less: Impact of noncontrolling interests, net of tax — — (564 ) — (564 ) Net income attributable to HomeAway, Inc. $ 10,417 $ 9,703 $ 4,389 $ (14,092 ) $ 10,417 Comprehensive income (loss) attributable to HomeAway, Inc. $ 10,693 $ 9,703 $ (15,314 ) $ (14,092 ) $ (9,010 ) Condensed Consolidating Statement of Operations Three months ended September 30, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 51,232 $ 46,792 $ (1,423 ) $ 96,601 Other — 19,687 1,884 (1,060 ) 20,511 Total revenue — 70,919 48,676 (2,483 ) 117,112 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 37 13,993 5,379 (2,483 ) 16,926 Product development 23 17,024 3,165 — 20,212 Sales and marketing 98 18,218 23,918 — 42,234 General and administrative 744 16,383 5,868 — 22,995 Amortization expense 63 1,370 1,964 — 3,397 Intercompany (income) expense, net — (6,311 ) 6,311 — — Operating income (965 ) 10,242 2,071 — 11,348 Other income (expense): Equity in earnings of consolidated subsidiaries 7,163 — — (7,163 ) — Interest expense (4,373 ) — (266 ) 266 (4,373 ) Interest income 585 87 146 (266 ) 552 Other expense, net (2 ) (92 ) (1,340 ) — (1,434 ) Total other income (expense), net 3,373 (5 ) (1,460 ) (7,163 ) (5,255 ) Income before income taxes 2,408 10,237 611 (7,163 ) 6,093 Income tax (expense) benefit 2,504 (4,196 ) 847 — (845 ) Net income 4,912 6,041 1,458 (7,163 ) 5,248 Less: Impact of noncontrolling interests, net of tax — — 336 — 336 Net income attributable to HomeAway, Inc. $ 4,912 $ 6,041 $ 1,122 $ (7,163 ) $ 4,912 Comprehensive income loss attributable to HomeAway, Inc. $ 4,421 $ 6,041 $ (12,808 ) $ (7,163 ) $ (9,509 ) Condensed Consolidating Statement of Operations Nine months ended September 30, 2015 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 177,996 $ 128,445 $ (5,160 ) $ 301,281 Other — 70,278 6,356 (2,362 ) 74,272 Total revenue — 248,274 134,801 (7,522 ) 375,553 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 120 50,039 15,835 (7,522 ) 58,472 Product development 87 56,508 8,640 — 65,235 Sales and marketing 485 67,498 75,867 — 143,850 General and administrative 3,210 52,476 16,429 — 72,115 Amortization expense 188 3,980 4,545 — 8,713 Intercompany (income) expense, net — (14,905 ) 14,905 — — Operating income (loss) (4,090 ) 32,678 (1,420 ) — 27,168 Other income (expense): Equity in earnings of consolidated subsidiaries 14,994 — — (14,994 ) — Interest expense (13,971 ) — (802 ) 802 (13,971 ) Interest income 2,567 244 417 (802 ) 2,426 Other expense, net 785 (182 ) (1,236 ) — (633 ) Total other income (expense), net 4,375 62 (1,621 ) (14,994 ) (12,178 ) Income before income taxes 285 32,740 (3,041 ) (14,994 ) 14,990 Income tax (expense) benefit 5,657 (12,808 ) (2,606 ) — (9,757 ) Net income (loss) 5,942 19,932 (5,647 ) (14,994 ) 5,233 Less: Impact of noncontrolling interests, net of tax — — (709 ) — (709 ) Net income attributable to HomeAway, Inc. $ 5,942 $ 19,932 $ (4,938 ) $ (14,994 ) $ 5,942 Comprehensive income (loss) attributable to HomeAway, Inc. $ 6,593 $ 19,932 $ (37,230 ) $ (14,994 ) $ (25,699 ) Condensed Consolidating Statement of Operations Nine months ended September 30, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 143,882 $ 138,365 $ (3,788 ) $ 278,459 Other — 56,098 5,466 (2,973 ) 58,591 Total revenue — 199,980 143,831 (6,761 ) 337,050 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 191 40,560 16,301 (6,761 ) 50,291 Product development 348 48,060 8,544 — 56,952 Sales and marketing 1,237 50,430 65,584 — 117,251 General and administrative 2,300 50,645 16,522 — 69,467 Amortization expense 188 4,038 5,937 — 10,163 Intercompany (income) expense, net — (18,064 ) 18,064 — — Operating income (loss) (4,264 ) 24,311 12,879 — 32,926 Other income (expense): Equity in earnings of consolidated subsidiaries 17,831 — — (17,831 ) — Interest expense (8,800 ) — (804 ) 762 (8,842 ) Interest income 1,342 143 394 (762 ) 1,117 Other expense, net (46 ) (145 ) (6,261 ) — (6,452 ) Total other income (expense), net 10,327 (2 ) (6,671 ) (17,831 ) (14,177 ) Income before income taxes 6,063 24,309 6,208 (17,831 ) 18,749 Income tax (expense) benefit 7,159 (10,833 ) (2,235 ) — (5,909 ) Net income 13,222 13,476 3,973 (17,831 ) 12,840 Less: Impact of noncontrolling interests, net of tax — — (382 ) — (382 ) Net income attributable to HomeAway, Inc. $ 13,222 $ 13,476 $ 4,355 $ (17,831 ) $ 13,222 Comprehensive income (loss) attributable to HomeAway, Inc. $ 12,580 $ 13,476 $ (1,228 ) $ (17,831 ) $ 6,997 Condensed Consolidating Statement of Cash Flows Nine months ended September 30, 2015 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Total Cash flows from operating activities Net cash provided by (used in) operating activities $ (8,137 ) $ 92,525 $ 34,706 $ 119,094 Cash flows from investing activities Change in restricted cash — — 122 122 Purchases of intangibles and other assets — (278 ) — (278 ) Purchases and sales of non-marketable investments (1,866 ) — (2,000 ) (3,866 ) Purchases of short-term investments (379,387 ) — — (379,387 ) Proceeds from maturities and redemptions of marketable securities 272,022 — — 272,022 Proceeds from sales of marketable securities 1,525 — — 1,525 Net settlement of foreign currency forwards 11,459 — 3,622 15,081 Purchases of property and equipment (5,188 ) (15,322 ) (3,282 ) (23,792 ) Net cash provided by (used in) investing activities (101,435 ) (15,600 ) (1,538 ) (118,573 ) Cash flows from financing activities Proceeds from exercise of options to purchase common stock 9,640 — — 9,640 Excess tax benefit from stock-based compensation 8,161 — — 8,161 Intercompany transfers 77,878 (80,159 ) 2,281 — Net cash provided by (used in) financing activities 95,679 (80,159 ) 2,281 17,801 Effect of exchange rate changes on cash and cash equivalents — (96 ) (9,258 ) (9,354 ) Net increase (decrease) in cash and cash equivalents (13,893 ) (3,330 ) 26,191 8,968 Cash and cash equivalents at beginning of period 174,337 19,977 98,011 292,325 Cash and cash equivalents at end of period $ 160,444 $ 16,647 $ 124,202 $ 301,293 Condensed Consolidating Statement of Cash Flows Nine months ended September 30, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Total Cash flows from operating activities Net cash provided by (used in) operating activities $ 12,047 $ 77,820 $ 21,548 $ 111,415 Cash flows from investing activities Acquisition of businesses, net of cash acquired — (17,847 ) — (17,847 ) Change in restricted cash — — 166 166 Purchases of intangibles and other assets — (303 ) — (303 ) Purchases and sales of non-marketable investments (10,135 ) — — (10,135 ) Purchases of short-term investments (473,331 ) — — (473,331 ) Proceeds from maturities and redemptions of marketable securities 23,048 — — 23,048 Proceeds from sales of marketable securities 4,358 — — 4,358 Net settlement of foreign currency forwards (113 ) — (11,898 ) (12,011 ) Purchases of property and equipment (276 ) (19,486 ) (694 ) (20,456 ) Net cash used in investing activities (456,449 ) (37,636 ) (12,426 ) (506,511 ) Cash flows from financing activities Proceeds from borrowings on convertible senior notes, net 390,978 — — 390,978 Proceeds from issuance of warrants 38,278 — — 38,278 Purchase of convertible note hedge (85,853 ) — — (85,853 ) Other financing activities (919 ) — — (919 ) Proceeds from exercise of options to purchase common stock 22,827 — — 22,827 Excess tax benefit from stock-based compensation 2,583 — — 2,583 Intercompany tranfers 34,000 (37,500 ) 3,500 — Net cash provided by (used in) financing activities 401,894 (37,500 ) 3,500 367,894 Effect of exchange rate changes on cash and cash equivalents — (16 ) (5,287 ) (5,303 ) Net increase (decrease) in cash and cash equivalents (42,508 ) 2,668 7,335 (32,505 ) Cash and cash equivalents at beginning of period 213,213 22,613 88,782 324,608 Cash and cash equivalents at end of period $ 170,705 $ 25,281 $ 96,117 $ 292,103	16. Guarantor and Non-Guarantor Supplemental Financial Information On November 4, 2015, HomeAway, Inc. (“HomeAway” or the “Company”), Expedia, Inc., a Delaware corporation (“Expedia”), and HMS 1 Inc., a Delaware corporation and a direct 100 percent owned subsidiary of Expedia (“Purchaser”), entered into an Agreement and Plan of Reorganization (the “Merger Agreement”). Pursuant to the Merger Agreement, on the terms and subject to the conditions set forth in the Merger Agreement, Purchaser commenced an exchange offer (the “Offer”) to purchase any and all of the outstanding shares of HomeAway common stock. The exchange offer is scheduled to expire at 12:00 midnight, Eastern Standard Time, at the end of December 14, 2015. As soon as practicable following the consummation of the Offer, on the terms and subject to the conditions set forth in the Merger Agreement, (i) Purchaser will be merged with and into HomeAway (the “First Merger”), with HomeAway surviving the First Merger and (ii) immediately following the First Merger, HomeAway will be merged with and into Expedia (the “Second Merger” and together with the First Merger, the “Mergers”), with Expedia surviving the Second Merger. On December 1, 2015, Expedia entered into an agreement for the private placement of $750 million of 5.000% senior unsecured notes due 2026 (the “Notes”). The private placement of the Notes was completed on December 8, 2015. The Notes were issued pursuant to an indenture dated as of December 8, 2015 (the “Indenture”) between Expedia, the subsidiary guarantors party thereto and The Bank of New York Mellon Trust Company, N.A., as trustee of the Notes (the “Trustee”). Pursuant to the Indenture, the Notes are required to be guaranteed by certain of Expedia’s domestic subsidiaries and certain future domestic subsidiaries of Expedia. At the effective time of the First Merger, HomeAway’s 100 percent owned domestic subsidiaries (other than Dwellable, Inc.) will enter into a supplement to the Indenture (the “Supplemental Indenture”) whereby HomeAway’s 100 percent owned domestic subsidiaries (other than Dwellable, Inc.) will become guarantors of the Notes. At the effective time of the Second Merger, HomeAway’s 100 percent owned domestic subsidiaries (other than Dwellable, Inc.) will remain guarantors of the Notes. HomeAway will have merged with and into Expedia, which is an obligor under the Notes. Under the Indenture, the guarantees are full, unconditional and joint and several with the exception of certain customary automatic subsidiary release conditions. Pursuant to a registration rights agreement dated as of December 8, 2015 (the “Registration Rights Agreement”) among Expedia, Goldman, Sachs & Co., J.P. Morgan Securities LLC and Merrill Lynch, Pierce, Fenner & Smith Incorporated, as representatives of the several initial purchasers of the Notes, Expedia agreed to use commercially reasonable best efforts to (i) file an exchange offer registration statement with respect to an offer to exchange the Notes and the guarantees thereof for substantially identical Notes and guarantees that are registered under the Securities Act (the “Exchange Offer”); (ii) cause the Exchange Offer registration statement to become effective; and (iii) consummate the Exchange Offer or, if required in lieu thereof, file a shelf registration statement and have it declared effective, in each case, within 365 days of issuance of the Notes. If Expedia fails to satisfy certain of its obligations under the Registration Rights Agreement (a “Registration Default”), it will be required to pay additional interest of 0.25% per annum to the holders of the Notes until such Registration Default is cured. In contemplation of the closing of the Mergers and the ultimate registration of the Notes, the Company has prepared the condensed consolidated financial information shown below to reflect the effectiveness of the Mergers and HomeAway’s 100 percent owned domestic subsidiaries (other than Dwellable, Inc.) as guarantors of the Notes (and HomeAway as an obligor of the Notes as a result of its merger with and into Expedia). Condensed Consolidating Balance Sheet December 31, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 174,337 $ 19,977 $ 98,011 $ — $ 292,325 Short-term investments 520,844 — — — 520,844 Accounts receivable, net — 12,113 11,076 — 23,189 Income tax receivable 1,168 — 732 — 1,900 Prepaid expenses and other current assets 6,935 7,972 3,006 — 17,913 Deferred tax assets 6,875 123 1,776 — 8,774 Intercompany receivable 324 7,156 3 (7,483 ) — Total current assets 710,483 47,341 114,604 (7,483 ) 864,945 Investment in subsidiaries 399,286 — — (399,286 ) — Property and equipment, net 7,457 42,022 6,694 — 56,173 Goodwill — 210,300 283,371 — 493,671 Intangible assets, net 1,816 32,938 35,702 — 70,456 Non-marketable investments 35,285 — — — 35,285 Deferred tax assets — — 1,545 — 1,545 Other non-current assets 228 351 7,474 — 8,053 Intercompany loans receivable 117,480 18,336 — (135,816 ) — Total assets $ 1,272,035 $ 351,288 $ 449,390 $ (542,585 ) $ 1,530,128 Liabilities, redeemable noncontrolling interests and stockholders’ equity Current liabilities: Accounts payable $ — $ 6,765 $ 1,516 $ — $ 8,281 Income tax payable (153 ) 153 1,344 — 1,344 Accrued expenses 202 29,837 20,216 — 50,255 Deferred revenue — 103,571 66,951 — 170,522 Intercompany payable 1,074 137 6,272 (7,483 ) — Total current liabilities 1,123 140,463 96,299 (7,483 ) 230,402 Convertible senior notes, net 316,181 — — — 316,181 Deferred revenue, less current portion — 3,133 46 — 3,179 Deferred tax liabilities 20,812 1,777 4,035 — 26,624 Other non-current liabilities 2,111 6,407 3,674 — 12,192 Intercompany loans payable — — 135,816 (135,816 ) — Total liabilities 340,227 151,780 239,870 (143,299 ) 588,578 Redeemable noncontrolling interests — — 9,742 — 9,742 Total stockholders’ equity 931,808 199,508 199,778 (399,286 ) 931,808 Total liabilities, redeemable noncontrolling interests and stockholders’ equity $ 1,272,035 $ 351,288 $ 449,390 $ (542,585 ) $ 1,530,128 Condensed Consolidating Statement of Operations Fiscal year ended December 31, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 195,882 $ 181,241 $ (5,184 ) $ 371,939 Other — 71,664 6,545 (3,386 ) 74,823 Total revenue — 267,546 187,786 (8,570 ) 446,762 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 230 53,983 21,969 (8,570 ) 67,612 Product development 391 65,087 11,604 — 77,082 Sales and marketing 1,483 66,628 86,884 — 154,995 General and administrative 3,220 68,039 21,872 — 93,131 Amortization expense 251 5,381 8,284 — 13,916 Intercompany (income) expense, net — (19,105 ) 19,105 — — Operating income (5,575 ) 27,533 18,068 — 40,026 Other income (expense): Equity in earnings of consolidated subsidiaries 23,176 — — (23,176 ) — Interest expense (13,290 ) — (1,108 ) 1,065 (13,333 ) Interest income 2,026 227 540 (1,065 ) 1,728 Other expense, net (234 ) (166 ) (6,782 ) — (7,182 ) Total other income (expense), net 11,678 61 (7,350 ) (23,176 ) (18,787 ) Income before income taxes 6,103 27,594 10,718 (23,176 ) 21,239 Income tax (expense) benefit 7,281 (12,476 ) (2,077 ) — (7,272 ) Net income 13,384 15,118 8,641 (23,176 ) 13,967 Less: Impact of noncontrolling interests, net of tax — — 583 — 583 Net income attributable to HomeAway, Inc. $ 13,384 $ 15,118 $ 8,058 $ (23,176 ) $ 13,384 Comprehensive income (loss) attributable to HomeAway, Inc. $ 12,017 $ 15,118 $ (9,496 ) $ (23,176 ) $ (5,537 ) Condensed Consolidating Statement of Cash Flows Year Ended December 31, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Total Cash flows from operating activities Net cash provided by operating activities $ 21,249 $ 99,158 $ 24,957 $ 145,364 Cash flows from investing activities Acquisition of businesses, net of cash acquired — (17,847 ) — (17,847 ) Change in restricted cash — — (501 ) (501 ) Purchases of intangibles and other assets — (473 ) — (473 ) Purchases and sales of non-marketable investments (25,148 ) — — (25,148 ) Purchases of short-term investments (575,606 ) — — (575,606 ) Proceeds from maturities and redemptions of marketable securities 109,516 — — 109,516 Proceeds from sales of marketable securities 4,358 — — 4,358 Net settlement of foreign currency forwards 1,424 — (1,752 ) (328 ) Purchases of property and equipment (5,498 ) (24,931 ) (1,218 ) (31,647 ) Net cash used in investing activities (490,954 ) (43,251 ) (3,471 ) (537,676 ) Cash flows from financing activities Repurchase of redeemable noncontrolling interest — — (1,461 ) (1,461 ) Proceeds from borrowings on convertible senior notes, net 390,978 — — 390,978 Proceeds from issuance of warrants 38,278 — — 38,278 Purchase of convertible note hedge (85,853 ) — — (85,853 ) Other financing activities (919 ) — — (919 ) Proceeds from exercise of options to purchase common stock 25,386 — — 25,386 Excess tax benefit from stock-based compensation 3,092 — — 3,092 Intercompany transfers 59,867 (58,500 ) (1,367 ) — Net cash provided by (used in) financing activities 430,829 (58,500 ) (2,828 ) 369,501 Effect of exchange rate changes on cash and cash equivalents — (43 ) (9,429 ) (9,472 ) Net increase (decrease) in cash and cash equivalents (38,876 ) (2,636 ) 9,229 (32,283 ) Cash and cash equivalents at beginning of period 213,213 22,613 88,782 324,608 Cash and cash equivalents at end of period $ 174,337 $ 19,977 $ 98,011 $ 292,325

Valuation And Qualifying Accoun

Valuation And Qualifying Accounts	12 Months Ended
	Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]
Valuation And Qualifying Accounts	FINANCIAL STATEMENT SCHEDULE SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS Beginning Additions Write-offs Ending (in thousands) Allowance for doubtful accounts: Year ended December 31, 2014 $ 1,038 $ 471 $ (846 ) $ 663 Year ended December 31, 2013 633 980 (575 ) 1,038 Year ended December 31, 2012 425 647 (439 ) 633 Beginning Additions Reductions Ending (in thousands) Deferred Tax Asset Valuation Allowance: Year ended December 31, 2014 $ 362 $ 2,270 $ (169 ) $ 2,463 Year ended December 31, 2013 921 838 (1,397 ) 362 Year ended December 31, 2012 507 753 (339 ) 921

Selected Quarterly Financial Da

Selected Quarterly Financial Data	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	Selected Quarterly Financial Data (Unaudited) For the Three Months Ended: March 31, June 30, September 30, December 31, March 31, June 30, September 30, December 31, (in thousands, except per share amounts) Revenue $ 79,464 $ 86,608 $ 90,148 $ 90,269 $ 105,682 $ 114,256 $ 117,112 $ 109,712 Net income (loss) attributable to HomeAway, Inc. $ 5,295 $ 5,470 $ 8,478 $ (1,557 ) $ 4,443 $ 3,867 $ 4,912 $ 162 (1) Net income (loss) per share—basic and diluted $ 0.06 $ 0.06 $ 0.10 $ (0.02 ) $ 0.05 $ 0.04 $ 0.05 $ 0.00 Shares used in per share calculation—basic 83,940 84,920 85,452 87,111 92,699 93,671 94,106 94,378 Shares used in per share calculation—diluted 86,492 87,647 88,215 90,144 96,295 96,011 96,389 96,600

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	12. Subsequent Events (i) On October 1, 2015, the Company acquired Dwellable, Inc., a United States company that is the creator of an online vacation rental search engine and mobile application that provides unique, interactive ways for travelers to find and book vacation rentals, for cash consideration of $18.0 million. (ii) In the fourth quarter of 2013, the Company acquired a controlling interest in travelmob. Under the terms of the acquisition agreement, the Company had a call option to purchase the remaining non-controlling interest of travelmob for the period defined in the agreement beginning on December 31, 2016. In the event the Company did not exercise its call option to purchase the remaining shares of travelmob by such deadline, the remaining travelmob stockholders had a put option to require the Company to repurchase their remaining interest for the period defined in the agreement beginning on February 1, 2017. The call and put were accounted for as embedded features of the non-controlling interest. In October 2015, the Company and the non-controlling interest holders agreed to terminate the call and put options and the Company acquired the remaining outstanding equity interest of travelmob. In connection with the mutual termination of the options, in the fourth quarter of 2015, the Company will recognize an operating expense charge of approximately $3.9 million representing the amount paid for the acquisition of the non-controlling interest in excess of the fair value of the non-controlling interest prior to the termination of the options. (iii) On November 4, 2015, the Company, Expedia, Inc., a Delaware corporation (“Expedia”), and HMS 1, Inc., a Delaware corporation and a direct wholly owned subsidiary of Expedia (“Purchaser”)entered into an Agreement and Plan of Reorganization (the “Merger Agreement”). Pursuant to the Merger Agreement, Purchaser commenced a tender offer to acquire all of the outstanding shares of Company common stock for an equity value of approximately $3.9 billion in cash and Expedia common stock, representing a per share price for HomeAway shares of $38.31, based on Expedia’s closing price on November 3, 2015. Under the terms of the transaction, Expedia will offer to acquire each outstanding share of common stock of HomeAway in exchange for $10.15 in cash and 0.2065 of a share of Expedia common stock. Under the terms of the transaction, Expedia will acquire each outstanding share of common stock of HomeAway through a tender offer, followed by a second-step merger. The Board of Directors of the Company unanimously approved the Merger Agreement and the consummation of the transactions contemplated thereby, including the tender offer and the Mergers. Consummation of the transactions is subject to the satisfaction or, if permissible, waiver of customary closing conditions, including there having been validly tendered and not validly withdrawn prior to the expiration of the tender offer a majority of all then outstanding shares of Company common stock, the absence of certain legal impediments and the expiration or termination of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended. The Merger Agreement contains certain termination rights, including the right of the Company to terminate the Merger Agreement to accept a superior proposal (subject to compliance with certain notice and other requirements). The Merger Agreement provides that, in connection with termination of the Merger Agreement by the Company or Expedia upon specified conditions, the Company will be required to pay to Expedia a termination fee of $138 million. In addition, subject to certain exceptions and limitations, the Company or Expedia may terminate the Merger Agreement if the Merger is not consummated by May 4, 2016 (or as such date may be extended pursuant to the terms of the Merger Agreement).

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Policies)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated financial statements include the accounts of HomeAway, Inc. and its wholly and majority-owned subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP, for interim financial reporting and applicable quarterly reporting regulations of the Securities and Exchange Commission, (the “SEC”). All significant intercompany transactions and balances have been eliminated in consolidation. In the opinion of the Company’s management, the accompanying interim unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments, consisting of normal recurring adjustments and those items discussed in these notes, necessary for a fair statement of the Company’s financial position, as of September 30, 2015 and December 31, 2014, results of operations for the three and nine months ended September 30, 2015 and September 30, 2014, comprehensive income (loss) for the three and nine months ended September 30, 2015 and September 30, 2014, cash flows for the nine months ended September 30, 2015 and September 30, 2014, and changes in stockholders’ equity for the nine months ended September 30, 2015. Certain information and disclosures normally included in the notes to the annual financial statements prepared in accordance with GAAP have been omitted from these interim condensed consolidated financial statements pursuant to the rules and regulations of the SEC. Accordingly, these unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014. Operating results for this interim period are not necessarily indicative of the results that may be expected for the year ending December 31, 2015, or for any other period.	Basis of Presentation The accompanying consolidated financial statements include the accounts of HomeAway, Inc. and all of its wholly and majority-owned subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States. All significant intercompany transactions and balances have been eliminated in consolidation.
Business Segment	Business Segment The Company has one operating segment consisting of various products and services related to its online marketplace of accommodation rental listings. The Company’s chief operating decision maker is the Chief Executive Officer. The chief operating decision maker allocates resources and assesses performance of the business and other activities at the single operating segment level.	Business Segment The Company has one operating segment consisting of various products and services related to its online marketplace of accommodation rental listings. The Company’s chief operating decision maker is considered to be the Chief Executive Officer. The chief operating decision maker allocates resources and assesses performance of the business and other activities at the single operating segment level.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements; and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates. These differences could have a material effect on the Company’s future results of operations and financial position. Significant items subject to estimates and assumptions include certain revenues, traveler guarantees, the allowance for doubtful accounts, marketable and non-marketable investments, goodwill and other indefinite-lived intangible assets, definite-lived intangible assets, depreciation and amortization, stock-based compensation, deferred income taxes and noncontrolling interests.	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates. These differences could have a material effect on the Company’s future results of operations and financial position. Significant items subject to estimates and assumptions include certain revenues, the allowance for doubtful accounts, the fair value of short-term investments, the carrying amounts of goodwill and other indefinite-lived intangible assets, depreciation and amortization, the valuation of stock options, deferred income taxes and the fair value of noncontrolling interests.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value is defined as the price received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to measure fair value: Level 1: Valuations based on quoted prices for identical assets and liabilities in active markets. Level 2: Valuations based on observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. Level 3: Valuations based on unobservable inputs reflecting the Company’s assumptions, consistent with reasonably available assumptions made by other market participants. These valuations require significant judgment. The Company’s financial instruments classified as Level 1 are valued using quoted prices generated by market transactions involving identical assets. Instruments classified as Level 2 are valued using non-binding market consensus prices corroborated with observable market data; quoted market prices for similar instruments in active markets; or pricing models, such as a discounted cash flow model, with significant inputs derived from or corroborated with observable market data. The Company did not hold financial instruments categorized as Level 3 in any period presented. Short-term investments are classified as available-for-sale and reported at fair value using the specific identification method. Unrealized gains and losses are excluded from earnings and reported as a component of other comprehensive income (loss), net of tax. Additionally, the Company periodically assesses whether an other than temporary impairment loss on investments has occurred due to declines in fair value or other market conditions. Declines in fair value considered other-than-temporary are recorded as an impairment in the condensed consolidated statement of operations. The Company did not record impairments of its investments during any of the periods presented. The carrying amounts of certain of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued liabilities and deferred revenue approximate fair value because of the relatively short maturity of these instruments. The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s condensed consolidated balance sheet at September 30, 2015 (in thousands): Balance as of Quoted Prices in Significant Significant Assets: Cash equivalents Money market funds $ 151,691 $ 151,691 $ — $ — Total cash equivalents 151,691 151,691 — — Restricted cash Time deposits 1,983 — 1,983 — Total restricted cash 1,983 — 1,983 — Short-term investments U.S. government agency bonds 23,339 — 23,339 — Time deposits 39,529 — 39,529 — Corporate bonds 346,782 — 346,782 — International government bonds 21,390 — 21,390 — Municipal bonds 187,303 — 187,303 — Total short-term investments 618,343 — 618,343 — Total financial assets $ 772,017 $ 151,691 $ 620,326 $ — The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s condensed consolidated balance sheet at December 31, 2014 (in thousands): Balance as of Quoted Prices in Significant Significant Assets: Cash equivalents Money market funds $ 183,008 $ 183,008 $ — $ — Municipal bonds 1,001 — 1,001 — Total cash equivalents 184,009 183,008 1,001 — Restricted cash — Time deposits 2,058 — 2,058 — Total restricted cash 2,058 — 2,058 — Short-term investments Time deposits 21,726 — 21,726 — Corporate bonds 353,212 — 353,212 — International government bonds 1,501 — 1,501 — Municipal bonds 140,406 — 140,406 — Commercial paper 3,999 — 3,999 — Total short-term investments 520,844 — 520,844 — Total financial assets $ 706,911 $ 183,008 $ 523,903 $ —	Fair Value of Financial Instruments Fair value is defined as the price that would be received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to measure fair value: Level 1: Valuations based on quoted prices for identical assets and liabilities in active markets. Level 2: Valuations based on observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. Level 3: Valuations based on unobservable inputs reflecting the Company’s own assumptions, consistent with reasonably available assumptions made by other market participants. These valuations require significant judgment. The following section describes the valuation methodologies used to measure certain financial assets and financial liabilities at fair value. Cash Equivalents, Restricted Cash and Short-Term Investments The Company’s cash equivalents, restricted cash and short-term investments classified as Level 1 are valued using quoted prices generated by market transactions involving identical assets. Short-term investments classified as Level 2 are valued using non-binding market consensus prices that are corroborated with observable market data; quoted market prices for similar instruments in active markets; or pricing models, such as a discounted cash flow model, with all significant inputs derived from or corroborated with observable market data. The Company did not hold any cash equivalents, restricted cash or short-term investments categorized as Level 3 as of December 31, 2014 or 2013. Short-term investments include time deposits, corporate bonds, municipal bonds and commercial paper and are classified as available-for-sale and reported at fair value using the specific identification method. Unrealized gains and losses are excluded from earnings and reported as a component of other comprehensive income (loss), net of related estimated tax provisions or benefits. Additionally, the Company periodically assesses whether an other than temporary impairment loss on investments has occurred due to declines in fair value or other market conditions. Declines in fair value that are considered other than temporary are recorded as an impairment in the consolidated statement of operations. The Company did not record any impairments of its investments for any of the periods presented. The carrying amounts of certain of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued liabilities and deferred revenue approximate fair value because of the relatively short maturity of these instruments. The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s consolidated balance sheets at December 31, 2014 (in thousands): Balance as of Quoted Prices in Significant Other Significant Assets Cash equivalents Money market funds $ 183,008 $ 183,008 $ — $ — Municipal bonds 1,001 — 1,001 — Total cash equivalents 184,009 183,008 1,001 — Restricted cash Time deposits 2,058 — 2,058 — Total restricted cash 2,058 — 2,058 — Short-term investments Certificates of deposit 21,726 — 21,726 — Corporate bonds 353,212 — 353,212 — Municipal bonds 140,406 — 140,406 — International government bonds 1,501 — 1,501 — Commercial paper 3,999 — 3,999 — Total short-term investments 520,844 — 520,844 — Total financial assets $ 706,911 $ 183,008 $ 523,903 $ — The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s consolidated balance sheets at December 31, 2013 (in thousands): Balance as of Quoted Prices in Significant Other Significant Assets Cash equivalents Money market funds $ 26,451 $ 26,451 $ — $ — Total cash equivalents 26,451 26,451 — — Restricted cash Money market funds 758 758 — — Total restricted cash 758 758 — — Short-term investments Time deposits 2,054 — 2,054 — Corporate bonds 33,257 — 33,257 — Municipal bonds 31,487 — 31,487 — Total short-term investments 66,798 — 66,798 — Total financial assets $ 94,007 $ 27,209 $ 66,798 $ —
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include investments in demand deposits, money market funds, and municipal bonds readily convertible into cash. Cash and cash equivalents are stated at cost, which approximates fair value. The Company considers all highly liquid investments purchased with an original maturity date of three months or less to be cash equivalents. Cash and cash equivalents consisted of the following (in thousands): September 30, December 31, Demand deposit accounts $ 149,602 $ 108,316 Money market funds 151,691 183,008 Municipal bonds — 1,001 Total cash and cash equivalents $ 301,293 $ 292,325	Cash and Cash Equivalents Cash and cash equivalents include investments in money market funds, corporate and municipal bonds and time deposits that are readily convertible into cash. Cash and cash equivalents are stated at cost, which approximates fair value. The Company considers all highly liquid investments purchased with an original maturity date of three months or less to be cash equivalents. Cash and cash equivalents consisted of the following at December 31, 2014 and December 31, 2013 (in thousands): December 31, 2014 2013 Demand deposit accounts $ 108,316 $ 298,157 Money market funds 183,008 26,451 Municipal bonds 1,001 — Total $ 292,325 $ 324,608
Restricted Cash	Restricted Cash Restricted cash of $2,200,000 and $2,492,000 at September 30, 2015 and December 31, 2014, respectively, was held in accounts owned by the Company to secure property licenses, leased office space, credit card availability and reimbursable direct debits due from the Company. Restricted cash is recorded as “Other non-current assets” on the Company’s condensed consolidated balance sheets.	Restricted Cash Restricted cash of $2,492,000 and $2,180,000 at December 31, 2014 and December 31, 2013, respectively, was held in accounts owned by the Company in conjunction with property license requirements, leased office space and to secure credit card availability and reimbursable direct debits due from the Company.
Short-term Investments	Short-term Investments Short-term investments generally consist of marketable securities with original maturities greater than ninety days as of the date of purchase. Investments in which the Company has the ability and intent, if necessary, to liquidate in order to support its current operations, including those with contractual maturities greater than one year from the date of purchase, are classified as short-term. The Company’s investment securities are classified as available-for-sale and presented at estimated fair value with any unrealized gains and losses included in other comprehensive income (loss). Cash flows from purchases, sales and maturities of available-for-sale securities are classified as investing activities and reported gross, including any related premiums or discounts. Premiums related to purchases of available-for-sale securities were $9,240,000 and $11,239,000 during the nine months ended September 30, 2015 and 2014, respectively. Short-term investments consisted of the following (in thousands): September 30, 2015 Gross Cost Gross Gross Estimated U.S government agency bonds $ 23,375 $ 3 $ (39 ) $ 23,339 Time deposits 39,529 — — 39,529 Corporate bonds 346,949 141 (308 ) 346,782 International government bonds 21,418 — (28 ) 21,390 Municipal bonds 187,254 83 (34 ) 187,303 Total short-term investments $ 618,525 $ 227 $ (409 ) $ 618,343 December 31, 2014 Gross Cost Gross Gross Estimated Time deposits $ 21,726 $ — $ — $ 21,726 Corporate bonds 353,957 7 (752 ) 353,212 International government bonds 1,504 — (3 ) 1,501 Municipal bonds 140,455 45 (94 ) 140,406 Commercial paper 3,999 — — 3,999 Total short-term investments $ 521,641 $ 52 $ (849 ) $ 520,844 For fixed income securities with unrealized losses as of September 30, 2015, the Company does not intend to sell any of these investments; and the Company expects it will not be required to sell any of these investments before recovery of the entire amortized cost basis. The Company has evaluated these fixed income securities and determined that no credit losses exist. Accordingly, the Company has determined that the unrealized losses on fixed income securities as of September 30, 2015 were temporary in nature. The following table summarizes the contractual underlying maturities of the Company’s short-term investments (in thousands): September 30, 2015 Less than 1 Year 1 to 3 Years Total U.S government agency bonds $ 597 $ 22,742 $ 23,339 Time deposits 25,951 13,578 39,529 Corporate bonds 203,039 143,743 346,782 International government bonds 15,192 6,198 21,390 Municipal bonds 131,167 56,136 187,303 Total short-term investments $ 375,946 $ 242,397 $ 618,343 December 31, 2014 Less than 1 Year 1 to 3 Years Total Time deposits $ 21,479 $ 247 $ 21,726 Corporate bonds 240,570 112,642 353,212 International government bonds 1,501 — 1,501 Municipal bonds 87,615 52,791 140,406 Commercial paper 3,999 — 3,999 Total short-term investments $ 355,164 $ 165,680 $ 520,844	Short-term Investments Short-term investments generally consist of marketable securities that have original maturities greater than ninety days as of the date of purchase. Investments in which the Company has the ability and intent, if necessary, to liquidate in order to support its current operations, including those with contractual maturities greater than one year from the date of purchase, are classified as short-term. The Company’s investment securities are classified as available-for-sale and are presented at estimated fair value with any unrealized gains and losses included in other comprehensive income (loss). Cash flows from purchases, sales and maturities of available-for-sale securities are classified as cash flows from investing activities and reported gross, including any related premiums or discounts. Premiums related to purchases of available-for-sale securities were $13,187,000 and $8,065,000 during the year ended December 31, 2014 and 2013, respectively. Fair values are based on quoted market prices. Short-term investments consisted of the following at December 31, 2014 and December 31, 2013 (in thousands): December 31, 2014 Gross Gross Gross Estimated Time deposits $ 21,726 $ — $ — $ 21,726 Corporate bonds 353,957 7 (752 ) 353,212 Municipal bonds 140,455 45 (94 ) 140,406 International government bonds 1,504 — (3 ) 1,501 Commercial paper 3,999 — — 3,999 Total short-term investments $ 521,641 $ 52 $ (849 ) $ 520,844 December 31, 2013 Gross Gross Gross Estimated Time deposits $ 2,055 $ — $ (1 ) $ 2,054 Corporate bonds 33,274 33 (50 ) 33,257 Municipal bonds 31,486 16 (15 ) 31,487 Total short-term investments $ 66,815 $ 49 $ (66 ) $ 66,798 For fixed income securities that have unrealized losses as of December 31, 2014, the Company does not have the intent to sell any of these investments and it is not more likely than not that it will be required to sell any of these investments before recovery of the entire amortized cost basis. The Company has evaluated these fixed income securities and determined that no credit losses exist. Accordingly, the Company has determined that the unrealized losses on fixed income securities as of December 31, 2014 were temporary in nature. The following table summarizes the contractual underlying maturities of the Company’s short-term investments at December 31, 2014 and December 31, 2013 (in thousands): December 31, 2014 Less than 1 to 3 Years Total Time deposits $ 21,479 $ 247 $ 21,726 Corporate bonds 240,570 112,642 353,212 Municipal bonds 87,615 52,791 140,406 International government bonds 1,501 — 1,501 Commercial paper 3,999 — 3,999 Total short-term investments $ 355,164 $ 165,680 $ 520,844 December 31, 2013 Less than 1 to 3 Years Total Time deposits $ 500 $ 1,554 $ 2,054 Corporate bonds 11,164 22,093 33,257 Municipal bonds 3,031 28,456 31,487 Total short-term investments $ 14,695 $ 52,103 $ 66,798 Non-marketable Cost Investment During the year ended December 31, 2014, the Company invested an additional $9,385,000 for a non-controlling equity interest in a privately-held company in China. As of December 31, 2014, the total carrying value of the Company’s investment in the privately-held company was $19,498,000. Also during 2014, the Company invested $15,000,000 for a non-controlling equity interest in a privately-held company in the United States that operates a travel research application and website. The Company’s investment in these privately-held companies is reported using the cost method of accounting or marked down to fair value when an event or circumstance indicates an other-than-temporary decline in value has occurred. No event or circumstance indicating an other-than-temporary decline in value of the Company’s interest in the non-marketable cost investments was identified. These investments are recorded in other non-current assets on the consolidated balance sheets.
Accounts Receivable	Accounts Receivable Accounts receivable are generated from credit card merchants who process the Company’s property listing sales, property listings sold on installments to the Company’s customers, partners who advertise the Company’s inventory on their websites and/or sell ancillary products to the Company’s customers and Internet display advertising. Accounts receivable outstanding beyond the contractual payment terms are considered past due. The Company determines its allowance for doubtful accounts by estimating losses on receivables based on known troubled accounts and historical experiences of losses incurred.	Accounts Receivable Accounts receivable are generated from several sources. Amounts due from credit card merchants who process the Company’s credit card sales from property listings and remit the proceeds to the Company are the primary source of accounts receivable. Accounts receivable are also generated from Internet display advertising amounts due in the ordinary course of business as well as amounts due to the Company for property listings, other products purchased on account or amounts due from partners who provide products and services such as advertising the properties of our property owners and managers on their websites, insurance products and payment processing services. Accounts receivable outstanding longer than the contractual payment terms are considered past due. The Company determines its allowance for doubtful accounts by estimating losses on receivables based on known troubled accounts and historical experiences of losses incurred.
Property and Equipment	Property and Equipment Property and equipment are recorded at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Computer equipment and purchased software are generally depreciated over three years. Furniture and fixtures are generally depreciated over five to ten years. Leasehold improvements are depreciated over the shorter of the contractual lease period or estimated useful life. Upon disposal, property and equipment and the related accumulated depreciation are removed and the resulting gain or loss is reflected in the condensed consolidated statements of operations. Ordinary maintenance and repairs are charged to expense, while expenditures that extend the physical or economic life of the assets are capitalized. The Company capitalizes certain internally developed software and website development costs. These capitalized costs were approximately $38,759,000 and $36,038,000 at September 30, 2015 and December 31, 2014, respectively, and are included in property and equipment, net, in the condensed consolidated balance sheets. Internally developed software costs are generally depreciated over five years. The Company recorded depreciation expense on internally developed software and website development costs as follows (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Depreciation expense on internally developed software and website development costs $ 1,677 $ 1,343 $ 4,867 $ 3,947	Property and Equipment Property and equipment are recorded at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Computer equipment and purchased software are generally depreciated over three years. Furniture and fixtures are generally depreciated over five to ten years. Leasehold improvements are depreciated on a straight-line basis over the shorter of the contractual lease period or their estimated useful life. Upon disposal, property and equipment and the related accumulated depreciation are removed from the accounts and the resulting gain or loss is reflected in the statements of operations. Ordinary maintenance and repairs are charged to expense, while expenditures that extend the physical or economic life of the assets are capitalized. The Company capitalizes certain internally developed software and website development costs. These capitalized costs were $36,038,000 and $30,523,000 at December 31, 2014 and December 31, 2013, respectively, and are included in property and equipment, net, in the consolidated balance sheets. Internally developed software costs are generally depreciated over five years. The Company recorded depreciation expense on internally developed software and website development costs as follows for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Depreciation expense on internally developed software and website development costs $ 5,471 $ 3,939 $ 2,874
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill arises from business combinations and is measured as the excess of the purchase consideration over the sum of the acquisition-date fair values of tangible and identifiable intangible assets acquired, less any liabilities assumed. The Company uses estimates and assumptions to value assets acquired and liabilities assumed at the acquisition date, and these estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, adjustments to the assets acquired and liabilities assumed are recorded with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the condensed consolidated statements of operations. Goodwill and intangible assets deemed to have indefinite useful lives, such as certain trade names, are not amortized. Tests for impairment of goodwill and indefinite-lived intangible assets are performed on an annual basis or when events or circumstances indicate that the carrying amount may not be recoverable. Circumstances that could trigger an impairment test outside of the annual test include but are not limited to: a significant adverse change in the business climate or legal factors, adverse cash flow trends, an adverse action or assessment by a regulator, unanticipated competition, loss of key personnel, decline in stock price and the results of tests for recoverability of a significant asset group. The Company has determined that no triggering event occurred during any of the periods presented. For goodwill and indefinite-lived intangible assets, the Company completes a “Step 0” analysis, which involves evaluating qualitative factors, including macroeconomic conditions, industry and market considerations, cost factors and overall financial performance related to its goodwill and its indefinite-lived intangible assets. If the Company’s “Step 0” analysis indicates that it is more likely than not that the fair value of a reporting unit or of an indefinite-lived intangible asset is less than its carrying amount, then the Company would perform a quantitative two-step impairment test. The quantitative analysis compares the fair value of the Company’s reporting unit or indefinite-lived intangible assets to its carrying amount, and an impairment loss is recognized equivalent to the excess of the carrying amount over fair value. If, after assessing the totality of events or circumstances, the Company determines that it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset exceeds its carrying amount, then the quantitative impairment tests are unnecessary. The Company performs an evaluation of goodwill and indefinite-lived intangible assets for impairment annually in the fourth quarter of its fiscal year. The determination of whether or not goodwill or indefinite-lived intangible assets have become impaired involves a significant level of judgment. Changes in the Company’s strategy and/or market conditions could significantly impact these judgments and require adjustments to recorded amounts of goodwill or indefinite-lived intangible assets. No impairment of goodwill or indefinite-lived intangible assets was identified in any of the periods presented. Identifiable intangible assets consist of trade names, customer relationships, developed technology, domain names and contractual non-competition agreements associated with acquired businesses. Intangible assets with finite lives are amortized over their estimated useful lives on a straight-line basis and reviewed for impairment whenever events or changes in circumstances indicate that an asset’s carrying value may not be recoverable (see Note 3). The straight-line method of amortization represents the Company’s best estimate of the distribution of the economic value of the identifiable intangible assets.	Goodwill and Intangible Assets Goodwill arises from business combinations and is measured as the excess of the purchase consideration over the sum of the acquisition-date fair values of tangible and identifiable intangible assets acquired, less any liabilities assumed. The Company uses estimates and assumptions to value assets acquired and liabilities assumed at the acquisition date, and these estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, adjustments to the assets acquired and liabilities assumed are recorded with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the consolidated statements of operations. Goodwill and intangible assets deemed to have indefinite useful lives, such as certain trade names, are not amortized. Tests for impairment of goodwill and indefinite-lived intangible assets are performed on an annual basis or when events or circumstances indicate that the carrying amount may not be recoverable. Circumstances that could trigger an impairment test outside of the annual test include but are not limited to: a significant adverse change in the business climate or legal factors, adverse cash flow trends, an adverse action or assessment by a regulator, unanticipated competition, loss of key personnel, decline in stock price and the results of tests for recoverability of a significant asset group. The Company determined that no triggering event occurred during any of the periods presented. For goodwill and indefinite lived intangible assets, the Company completes what is referred to as the “Step 0” analysis, which involves evaluating qualitative factors, including macroeconomic conditions, industry and market considerations, cost factors, and overall financial performance related to its goodwill and its indefinite lived intangible assets. If the Company’s “Step 0” analysis indicates that it is more likely than not that the fair value of a reporting unit or of an indefinite lived intangible asset is less than its carrying amount, then the Company would perform a quantitative two-step impairment test. The quantitative analysis compares the fair value of the Company’s reporting unit or indefinite-lived intangible assets to its carrying amount, and an impairment loss is recognized equivalent to the excess of the carrying amount over fair value. If, after assessing the totality of events or circumstances, the Company determines that it is more likely than not that the fair value of a reporting unit or indefinite lived intangible asset exceeds its carrying amount, then the quantitative impairment tests are unnecessary. The Company performs an evaluation of goodwill and indefinite-lived intangible assets for impairment annually in the fourth quarter of its fiscal year. The determination of whether or not goodwill or indefinite-lived intangible assets have become impaired involves a significant level of judgment. Changes in the Company’s strategy and/or market conditions could significantly impact these judgments and require adjustments to recorded amounts of goodwill or intangible assets. No impairment of goodwill or indefinite-lived intangible assets was identified in any of the periods presented. Identifiable intangible assets consist of trade names, customer listings, technology, domain names and contractual non-competition agreements associated with acquired businesses. Intangible assets with finite lives are amortized over their estimated useful lives on a straight-line basis and reviewed for impairment whenever events or changes in circumstances indicate that an asset’s carrying value may not be recoverable (see Note 4). The straight-line method of amortization represents the Company’s best estimate of the distribution of the economic value of the identifiable intangible assets.
Impairment of Long-lived Assets	Impairment of Long-lived Assets The Company evaluates long-lived assets held for use, such as property and equipment, for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. An impairment loss is recognized when estimated future undiscounted cash flows expected from the use of the asset plus net proceeds expected from disposition of the asset, if any, are less than the carrying value of the asset. When an impairment loss is recognized, the carrying amount of the asset is reduced to its estimated fair value in the period in which the determination is made. No material impairments of long-lived assets have been recorded during any of the periods presented.	Impairment of Long-lived Assets The Company evaluates long-lived assets held for use, such as property and equipment, for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. An impairment loss is recognized when estimated future undiscounted cash flows expected to result from the use of the asset plus net proceeds expected from disposition of the asset, if any, are less than the carrying value of the asset. When an impairment loss is recognized, the carrying amount of the asset is reduced to its estimated fair value in the period in which the determination is made. No material impairments of long-lived assets have been recorded during any of the periods presented.
Leases	Leases The Company leases facilities in several countries around the world and certain equipment under non-cancelable lease agreements. The terms of certain lease agreements provide for rental payments on a graduated basis. Rent expense is recognized on a straight-line basis over the lease period and accrued as rent expense incurred but not paid.	Leases The Company leases facilities in several countries around the world and certain equipment under non-cancelable lease agreements. The terms of certain lease agreements provide for rental payments on a graduated basis. Rent expense is recognized on a straight-line basis over the lease period and accrued as rent expense incurred but not paid.
Revenue Recognition	Revenue Recognition The Company recognizes revenue when persuasive evidence of an agreement exists, delivery has occurred, the sales price is fixed or determinable and collectability is reasonably assured. The Company accounts for sales incentives to customers as a reduction of revenue at the time revenue is recognized from the related product sale. The Company also reports revenue net of any sales taxes collected. The Company generates a significant portion of its revenue from customers purchasing online advertising services related to the listing of their properties for rent, primarily on a subscription basis over a fixed-term. The Company also generates revenue based on the number of traveler inquiries and reservation bookings for property listings on the Company’s websites, local and national Internet display advertisers, license of property management software and ancillary products and services. Payments for term-based subscriptions received in advance of services rendered are recorded as deferred revenue and recognized on a straight-line basis over the listing period. Revenue for inquiry-based contracts are determined on a fixed fee-per-inquiry basis as stated in the arrangement and recognized when the service has been performed. The Company earns commission revenue for reservations made online through its websites, which is calculated as a percentage of the value of the reservation. This revenue is earned as the services are performed or as the customers’ refund privileges lapse and is included in listing revenue in the condensed consolidated statements of operations. Internet display advertising revenue is generated primarily from advertisements appearing on the Company’s websites. Depending upon the terms, revenue is earned each time an impression is delivered, a user clicks on an ad, a graphic ad is displayed, or a user clicks-through the ad and takes a specified action on the destination site. The Company sells gift cards with no expiration date to travelers and does not charge administrative fees on unused cards. There is a portion of the gift card obligation that, based on historical redemption patterns, will not be used by the Company’s customers and is not required to be remitted to relevant jurisdictions (“breakage”). At the point of sale, the Company recognizes estimated breakage as deferred revenue and amortizes it over 48 months based on historical redemption patterns. The Company also records commission revenue for each gift card sale over the same 48-month redemption period. Through its professional software for bed and breakfasts and professional property managers, the Company also makes selected, online bookable properties available to online travel agencies and channel partners. The Company receives a percentage of the transaction value or a fee from the property manager for making this inventory available, which is recognized when earned. This revenue is included in other revenue in the condensed consolidated statements of operations. The Company generates revenue from the sale of hosted software solutions where revenue is recognized on a straight-line basis over the contract term, generally one year. Certain implementation services are essential to the customer’s use of the Company’s hosted software solutions. Accordingly, the Company recognizes implementation revenue ratably over the estimated period of the hosting relationship, which is three years. Recognition starts once the product has been made available to the customer. Training and consulting revenue is recognized upon delivery of the training or consulting services to the end customer.	Revenue Recognition The Company recognizes revenue when persuasive evidence of an agreement exists, delivery has occurred, the sales price is fixed or determinable and collectability is reasonably assured. The Company accounts for sales incentives to customers as a reduction of revenue at the time that the revenue is recognized from the related product sale. The Company also reports revenue net of any sales tax collected. The Company generates a significant portion of its revenue from customers purchasing online advertising services related to the listing of their properties for rent, primarily on a subscription basis over a fixed-term. The Company also generates revenue based on the number of traveler inquiries and reservation bookings for property listings on the Company’s websites, local and national Internet display advertisers, license of property management software and ancillary products and services. Payments for term-based subscriptions received in advance of services being rendered are recorded as deferred revenue and recognized on a straight-line basis over the listing period. Revenue for inquiry-based contracts are determined on a fixed fee-per-inquiry as stated in the arrangement and recognized when the service has been performed. The Company earns commission revenue for reservations made online through its websites, which is calculated as a percentage of the value of the reservation. This revenue is earned as the services are performed or as the customers’ refund privileges lapse and is included in listing revenue in the consolidated statement of operations. Internet display advertising revenue is generated primarily from advertisements appearing on the Company’s websites. Depending upon the terms, revenue is earned each time an impression is delivered, a user clicks on an ad, a graphic ad is displayed, or a user clicks-through the ad and takes a specified action on the destination site. The Company sells gift cards with no expiration date to travelers and does not charge administrative fees on unused cards. There is a portion of the gift card obligation that, based on historical redemption patterns, will not be used by the Company’s customers and is not required to be remitted to relevant jurisdictions (“breakage”). At the point of sale, the Company recognizes breakage as deferred revenue and amortizes it over 48 months based on historical redemption patterns. The Company also records commission revenue for each gift card sale over the same 48-month redemption period. Through its professional software for bed and breakfasts and professional property managers, the Company makes selected, online bookable properties available to online travel agencies and channel partners. The Company receives a percentage of the transaction value or a fee from the property manager for making this inventory available, which is recognized when earned. This revenue is included in other revenue in the consolidated statement of operations. The Company generates revenue from the licensing of software products, the sale of maintenance agreements and the sale of hosted software solutions. For software license sales, one year of maintenance is typically included as part of the initial purchase price of the bundled offering with annual renewals of the maintenance component of the agreement following in subsequent years. The Company recognizes revenue from the sale of perpetual licenses upon delivery, which generally occurs upon electronic transfer of the license key that makes the product available to the purchaser. As software is usually sold with maintenance, the amount of revenue allocated to the software license is determined by estimating the fair value of the maintenance and subtracting it from the total invoice or contract amount. Vendor-specific objective evidence, or VSOE, of the fair value of maintenance services is determined by the standard published list pricing for maintenance renewals, as the Company generally charges list prices for maintenance renewals. In determining VSOE, the Company requires that a substantial majority of the selling price for maintenance services fall within a reasonably narrow pricing range. Maintenance and support revenue is recognized ratably over the term of the agreement beginning on the activation date. Amounts that have been invoiced are recorded in accounts receivable and in deferred revenue or revenue, depending on whether the revenue recognition criteria have been met. Sales of hosted software solutions are generally for a one-year period. Revenue is recognized on a straight-line basis over the contract term. Certain implementation services related to the hosting services are essential to the customer’s use of the hosting services. For sales of these hosting services where the Company is responsible for implementation, the Company recognizes implementation revenue ratably over the estimated period of the hosting relationship, which the Company considers to be three years. Recognition starts once the product has been made available to the customer. Training and consulting revenue is recognized upon delivery of the training or consulting services to the end customer. The Company accounts for sales incentives to customers as a reduction of revenue at the time that the revenue is recognized from the related product sale. The Company also reports revenue net of any sales tax collected.
Cost of Revenue		Cost of Revenue Cost of revenue consists of salaries, benefits and related expenses and stock-based compensation of the Company’s customer service and web hosting personnel, merchant fees charged by credit card processors, costs associated with the hosting of the Company’s websites, costs associated with payments and reserves under the Company’s Carefree Rental Guarantee, allocated facility expenses and depreciation costs.
Advertising Expenses		Advertising Expenses The Company expenses all advertising costs as incurred. Advertising expenses included in sales and marketing expenses were approximately $59,978,000, $39,138,000 and $37,559,000 for the years ended December 31, 2014, 2013 and 2012, respectively.
Stock-Based Compensation	Stock-Based Compensation Stock-based compensation for option awards is recognized based upon the estimated grant date fair value of the awards measured using the Black–Scholes valuation model. The fair value of restricted stock awards is determined based on the number of shares granted and the fair value of the Company’s common stock on the grant date. Fair value is generally recognized as an expense on a straight-line basis, net of estimated forfeitures, over the requisite service period. When estimating forfeitures, the Company considers voluntary termination behaviors as well as trends of actual option forfeitures. The Company uses the “with and without” approach in determining the order in which tax attributes are utilized. As a result, the Company only recognizes a tax benefit from stock-based awards in additional paid-in capital if an incremental tax benefit is realized after all other tax attributes currently available to the Company have been utilized. When tax deductions from stock-based awards are less than the cumulative book compensation expense, the tax effect of the resulting difference is charged first to additional paid-in capital to the extent of the Company’s pool of windfall tax benefits with any remainder recognized in income tax expense. The Company has determined that it has a sufficient windfall pool available and therefore no amounts have been recognized as income tax expense. In addition, the Company accounts for the indirect effects of stock-based awards on other tax attributes through the condensed consolidated statements of operations. The gross benefits of tax deductions in excess of recognized compensation costs are reported as financing cash inflows, but only when such excess tax benefits are realized by a reduction to current taxes payable. The following table summarizes the excess tax benefit that the Company recorded (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Excess tax benefit from stock-based compensation, net $ 5,200 $ 1,362 $ 7,494 $ 2,583 This tax benefit has been recorded as additional paid-in capital on the Company’s condensed consolidated balance sheets.	Stock-Based Compensation The cost of stock-based compensation is recognized in the financial statements based upon the estimated grant date fair value of the awards measured using the Black–Scholes valuation model. The fair value of restricted stock awards and units is determined based on the number of shares granted and the fair value of the Company’s common stock as of the grant date. Fair value is generally recognized as an expense on a straight-line basis, net of estimated forfeitures, over the employee requisite service period. When estimating forfeitures, the Company considers voluntary termination behaviors as well as trends of actual option forfeitures. The Company uses the “with and without” approach in determining the order in which tax attributes are utilized. As a result, the Company only recognizes a tax benefit from stock-based awards in additional paid-in capital if an incremental tax benefit is realized after all other tax attributes currently available to the Company have been utilized. When tax deductions from stock-based awards are less than the cumulative book compensation expense, the tax effect of the resulting difference is charged first to additional paid-in capital to the extent of the Company’s pool of windfall tax benefits with any remainder recognized in income tax expense. The Company has determined that it has a sufficient windfall pool available and therefore no amounts have been recognized in income tax expense. In addition, the Company accounts for the indirect effects of stock-based awards on other tax attributes through the consolidated statements of operations. The gross benefits of tax deductions in excess of recognized compensation costs are reported as financing cash inflows, but only when such excess tax benefits are realized by a reduction to current taxes payable. The following table summarizes the excess tax benefit that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Excess tax benefit from stock-based compensation, net $ 2,743 $ 8,226 $ 7,122 This tax benefit has been recorded as additional paid-in capital on the Company’s consolidated balance sheets.
Income Taxes	Income Taxes The Company recognizes income taxes using an asset and liability approach. This approach requires the recognition of deferred tax liabilities and assets for the future tax consequences of events that have been recognized in the Company’s consolidated financial statements or tax returns. The measurement of deferred taxes is based on provisions of the enacted tax law and the effects of future changes in tax laws or rates are not anticipated. A valuation allowance is recognized if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. Evaluating the need for an amount of a valuation allowance for deferred tax assets requires significant judgment and analysis of the positive and negative evidence available, including past operating results, estimates of future taxable income, reversals of existing taxable temporary differences and the feasibility of tax planning in order to determine whether all or some portion of the deferred tax assets will not be realized. Based on the available evidence and judgment, the Company has determined that it is more likely than not that certain loss carryforwards will not be realized; therefore, the Company has established a valuation allowance for such deferred tax assets to reduce the loss carryforward assets to amounts expected to be utilized. The Company may be subject to income tax audits by the respective tax authorities in any or all of the jurisdictions in which the Company operates. The Company is currently undergoing audits in the United States as well as at its subsidiary in the United Kingdom. Significant judgment is required in determining uncertain tax positions. The Company recognizes the benefit of uncertain income tax positions only if these positions are more likely than not to be sustained. Also, the recognized income tax benefit is measured at the largest amount that is more than 50% likely of being realized. The Company adjusts these reserves in light of changing facts and circumstances, such as the closing of an audit or the refinement of an estimate. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest and penalties related to unrecognized tax benefits as a component of income tax expense. The countries in which the Company may be subject to potential examination by tax authorities include Australia, Brazil, Colombia, France, Germany, Italy, the Netherlands, New Zealand, Singapore, Spain, Switzerland, Thailand, the United Kingdom and the United States. The calculation of the Company’s tax liabilities involves the inherent uncertainty associated with the application of complex tax laws. As a multinational corporation, the Company conducts its business in many countries and is subject to taxation in many jurisdictions. The taxation of the Company’s business is subject to the application of various and sometimes conflicting tax laws and regulations as well as multinational tax conventions. The Company’s effective tax rate is highly dependent upon the geographic distribution of its worldwide earnings or losses, the tax regulations and tax rates in each geographic region, the availability of tax credits and carryforwards, and the effectiveness of its tax planning strategies. The application of tax laws and regulations is subject to legal and factual interpretation, judgment and uncertainty. Tax laws themselves are subject to change as a result of changes in fiscal policy, changes in legislation, and the evolution of regulations and court rulings. Consequently, taxing authorities may impose tax assessments or judgments against the Company that could materially impact its tax liability and/or its effective income tax rate. The Company believes it has adequately provided in its financial statements for additional taxes that it estimates may be assessed by the various taxing authorities. While the Company believes that it has adequately provided for all uncertain tax positions, amounts asserted by tax authorities could be greater or less than the Company’s accrued position. These tax liabilities, including the interest and penalties, are adjusted pursuant to a settlement with tax authorities, completion of audit, refinement of estimates or expiration of various statutes of limitation.	Income Taxes The Company recognizes income taxes using an asset and liability approach. This approach requires the recognition of deferred tax liabilities and assets for the future tax consequences of events that have been recognized in the Company’s consolidated financial statements or tax returns. The measurement of deferred taxes is based on provisions of the enacted tax law and the effects of future changes in tax laws or rates are not anticipated. A valuation allowance is recognized if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. Evaluating the need for an amount of a valuation allowance for deferred tax assets requires significant judgment and analysis of the positive and negative evidence available, including past operating results, estimates of future taxable income, reversals of existing taxable temporary differences and the feasibility of tax planning in order to determine whether all or some portion of the deferred tax assets will not be realized. Based on the available evidence and judgment, the Company has determined that it is more likely than not that certain loss carryforwards will not be realized; therefore, the Company has established a valuation allowance for such deferred tax assets to reduce the loss carryforward assets to amounts expected to be utilized. The Company may be subject to income tax audits by the respective tax authorities in any or all of the jurisdictions in which the Company operates. The Company is currently undergoing an audit in the United States as well as at its subsidiary in the United Kingdom. Significant judgment is required in determining uncertain tax positions. The Company recognizes the benefit of uncertain income tax positions only if these positions are more likely than not to be sustained. Also, the recognized income tax benefit is measured at the largest amount that is more than 50% likely of being realized. The Company adjusts these reserves in light of changing facts and circumstances, such as the closing of an audit or the refinement of an estimate. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest and penalties related to unrecognized tax benefits as a component of income tax expense. The countries in which the Company may be subject to potential examination by tax authorities include Australia, Brazil, Colombia, France, Germany, Italy, the Netherlands, New Zealand, Singapore, Spain, Switzerland, Thailand, the United Kingdom and the United States. The calculation of the Company’s tax liabilities involves the inherent uncertainty associated with the application of complex tax laws. As a multinational corporation, the Company conducts its business in many countries and is subject to taxation in many jurisdictions. The taxation of the Company’s business is subject to the application of various and sometimes conflicting tax laws and regulations as well as multinational tax conventions. The Company’s effective tax rate is highly dependent upon the geographic distribution of its worldwide earnings or losses, the tax regulations and tax rates in each geographic region, the availability of tax credits and carryforwards, and the effectiveness of its tax planning strategies. The application of tax laws and regulations is subject to legal and factual interpretation, judgment and uncertainty. Tax laws themselves are subject to change as a result of changes in fiscal policy, changes in legislation, and the evolution of regulations and court rulings. Consequently, taxing authorities may impose tax assessments or judgments against the Company that could materially impact its tax liability and/or its effective income tax rate. The Company believes it has adequately provided in its financial statements for additional taxes that it estimates may be assessed by the various taxing authorities. While the Company believes that it has adequately provided for all uncertain tax positions, amounts asserted by tax authorities could be greater or less than the Company’s accrued position. These tax liabilities, including the interest and penalties, are adjusted pursuant to a settlement with tax authorities, completion of audit, refinement of estimates or expiration of various statutes of limitation.
Foreign Currency	Foreign Currency The functional currency of the Company’s foreign subsidiaries is generally their respective local currency. The financial statements of the Company’s international operations are translated into U.S. dollars using the exchange rate at each balance sheet date for assets and liabilities, the historical exchange rate for stockholders’ equity, and a weighted average exchange rate for each period for revenue, expenses, gains and losses. Foreign currency translation adjustments are recorded as a separate component of stockholders’ equity. Gains and losses from non-functional currency denominated transactions are recorded in other income (expense) in the Company’s condensed consolidated statements of operations. The following table summarizes the foreign exchange loss that the Company recorded (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Foreign exchange loss $ 279 $ 1,432 $ 930 $ 6,421	Foreign Currency Translation The functional currency of the Company’s foreign subsidiaries is generally their respective local currency. The financial statements of the Company’s international operations are translated into U.S. dollars using the exchange rate at each balance sheet date for assets and liabilities, the historical exchange rate for stockholders’ equity, and a weighted average exchange rate for each period for revenue, expenses, and gains and losses. Foreign currency translation adjustments are recorded as a separate component of stockholders’ equity. Gains and losses from foreign currency denominated transactions are recorded in other income (expense) in the Company’s consolidated statements of operations. The following table summarizes the foreign exchange loss that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Foreign exchange loss $ 7,138 $ 5,964 $ 2,618
Derivative Financial Instruments	Derivative Financial Instruments As a result of the Company’s international operations, it is exposed to various market risks that may affect its consolidated results of operations, cash flows and financial position. These market risks include, but are not limited to, fluctuations in currency exchange rates. The Company’s primary foreign currency exposures are in Euros, British Pounds, Brazilian Real, Australian Dollars, Singapore Dollars and New Zealand Dollars. As a result, the Company faces exposure to adverse movements in currency exchange rates as the financial results of its operations are translated from local currency into U.S. dollars. Additionally, foreign exchange rate fluctuations on transactions denominated in currencies other than the functional currency result in gains and losses that are reflected in other income (expense) in the Company’s condensed consolidated statements of operations. The Company may enter into derivative instruments to hedge certain net exposures of nonfunctional currency denominated assets and liabilities, primarily related to intercompany loans, even though it does not elect to apply hedge accounting or hedge accounting does not apply. Gains and losses resulting from a change in fair value for these derivatives are reflected in the period in which the change occurs and are recognized on the condensed consolidated statement of operations in other income (expense). Cash flows from these contracts are classified within cash flows from investing activities on the condensed consolidated statements of cash flows. The Company does not use financial instruments for trading or speculative purposes. The Company recognizes all derivative instruments on the balance sheet at fair value and its derivative instruments are generally short-term in duration. The Company is exposed to the risk that counterparties to derivative contracts may fail to meet their contractual obligations. The following table shows the fair value and notional amounts of the Company’s outstanding or unsettled derivative instruments that are not designated as hedging instruments covering foreign currency exposures as of September 30, 2015 which settled October 2, 2015 (in thousands): September 30, 2015 Significant Other Observable Inputs (Level 2) Gross Amount of Gross Amounts Net Amount U.S. Dollar Prepaid expense and other current assets $ 1,173 $ — $ 1,173 $ 41,301 Accrued expenses (656 ) — (656 ) 129,303 Total $ 517 $ — $ 517 $ 170,604 In addition to the notional amounts listed above, the Company entered into new derivative contracts with notional amounts of $157,735,000 on September 30, 2015 with a closing date of January 5, 2016. The following table shows the fair value and notional amounts of the Company’s outstanding or unsettled derivative instruments that are not designated as hedging instruments covering foreign currency exposures as of December 31, 2014 which settled January 2, 2015 (in thousands): December 31, 2014 Significant Other Gross Amount of Gross Amounts Net Amount U.S. Dollar Prepaid expense and other current assets $ 4,506 $ — $ 4,506 $ 157,164 Accrued expenses (67 ) — (67 ) 11,562 Total $ 4,439 $ — $ 4,439 $ 168,726	Derivative Financial Instruments As a result of the Company’s international operations, it is exposed to various market risks that may affect its consolidated results of operations, cash flows and financial position. These market risks include, but are not limited to, fluctuations in currency exchange rates. The Company’s primary foreign currency exposures are in Euros, British Pound Sterling and Australian Dollars. As a result, the Company faces exposure to adverse movements in currency exchange rates as the financial results of its operations are translated from local currency into U.S. dollars upon consolidation. Additionally, foreign exchange rate fluctuations on transactions denominated in currencies other than the functional currency result in gains and losses that are reflected in other income (expense) in the Company’s consolidated statements of operations. The Company may enter into derivative instruments to hedge certain net exposures of nonfunctional currency denominated assets and liabilities, primarily related to intercompany loans, even though it does not elect to apply hedge accounting or hedge accounting does not apply. Gains and losses resulting from a change in fair value for these derivatives are reflected in the period in which the change occurs and are recognized on the consolidated statement of operations in other income (expense). Cash flows from these contracts are classified within cash flows from investing activities on the consolidated statements of cash flows. The Company does not use financial instruments for trading or speculative purposes. The Company recognizes all derivative instruments on the balance sheet at fair value and its derivative instruments are generally short-term in duration. The Company is exposed to the risk that counterparties to derivative contracts may fail to meet their contractual obligations. The following table shows the fair value and notional amounts of the Company’s outstanding or unsettled derivative instruments that are not designated as hedging instruments covering foreign currency exposures during the year ended December 31, 2014 and closing January 2, 2015 (in thousands): Balance Sheet Caption December 31, 2014 Significant Other U.S. Dollar Gross Amount of Gross Amounts Net Amount Prepaid expenses and other current assets $ 4,506 $ — $ 4,506 $ 157,164 Accrued expenses (67 ) — (67 ) 11,562 Total $ 4,439 $ — $ 4,439 $ 168,726 In addition to the notional amounts listed above, the Company also had $165,454,000 of derivatives entered into on December 31, 2014 with a closing date of April 2, 2015. The following table shows the fair value and notional amounts of the Company’s outstanding or unsettled derivative instruments that are not designated as hedging instruments covering foreign currency exposures during the year ended December 31, 2013 (in thousands): Balance Sheet Caption December 31, 2013 Significant Other U.S. Dollar Gross Amount of Gross Amounts Net Amount Prepaid expenses and other current assets $ 363 $ — $ 363 $ 20,520 Accrued expenses (979 ) — (979 ) 84,292 Total $ (616 ) $ — $ (616 ) $ 104,812
Net Income Per Share	Net Income Per Share Attributable to HomeAway, Inc. Basic net income per share is computed by dividing net income attributable to HomeAway, Inc. by the weighted average number of common shares outstanding during the period. Diluted income per share is computed by dividing net income attributable to HomeAway, Inc. by the weighted average common shares outstanding plus potentially dilutive common shares. The dilutive effect of outstanding options, warrants and awards is reflected in diluted earnings per share by application of the treasury stock method. Restricted stock awards provide the holder of unvested shares the right to participate in dividends declared on the Company’s common stock. Accordingly, these shares are included in the weighted average shares outstanding for the computation of basic earnings per share in periods of undistributed earnings. Restricted stock awards are excluded from the basic earnings per share in periods of undistributed losses as the holders are not contractually obligated to participate in the losses of the Company. Unvested restricted stock units do not provide the holder the right to participate in dividends declared on the Company’s common stock. Accordingly, these shares are excluded in the weighted average shares outstanding for the computation of basic earnings per share in periods of undistributed earnings or losses.	Net Income Per Share Attributable to HomeAway, Inc. Basic net income per share is computed by dividing net income attributable to HomeAway, Inc. by the weighted average number of common shares outstanding during the period. Diluted income per share is computed by dividing net income attributable to HomeAway, Inc. by the weighted average common shares outstanding plus potentially dilutive common shares. The dilutive effect of outstanding options, warrants and awards is reflected in diluted earnings per share by application of the treasury stock method. Restricted stock awards provide the holder of unvested shares the right to participate in dividends declared on the Company’s common stock. Accordingly, these shares are included in the weighted average shares outstanding for the computation of basic earnings per share in periods of undistributed earnings. Restricted stock awards are excluded from the basic earnings per share in periods of undistributed losses as the holders are not contractually obligated to participate in the losses of the Company. Unvested restricted stock units do not provide the holder the right to participate in dividends declared on the Company’s common stock. Accordingly, these shares are excluded in the weighted average shares outstanding for the computation of basic earnings per share in periods of undistributed earnings or losses.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Attributable to HomeAway, Inc. Comprehensive income (loss) attributable to HomeAway, Inc. consists of net income (loss), foreign currency translation adjustments, unrealized gain (loss) on short-term investments, defined benefit pension plan adjustments and comprehensive loss attributable to noncontrolling interests.	Comprehensive Income (Loss) Attributable to HomeAway, Inc. Comprehensive income (loss) attributable to HomeAway, Inc. consists of net income (loss), cumulative foreign currency translation adjustments, unrealized gain (loss) on available-for-sale securities and comprehensive income (loss) attributable to noncontrolling interests.
Concentrations		Concentrations Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents and short-term investments. The Company’s cash is deposited in financial institutions. However, cash and cash equivalents may exceed federally insured limits from time to time. The Company has not experienced any losses on its deposits.
Reclassifications		Reclassifications Certain reclassifications have been made to prior periods’ consolidated balance sheets and statements of operations to conform to the current period presentation. These reclassifications did not result in any change in previously reported total revenue, net income, total assets or shareholders’ equity.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2014-09, Revenue from Contracts with Customers, requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. In July 2015, the FASB voted to defer the effective date to fiscal years, and interim reporting periods within those years, beginning after December 15, 2017. Early adoption is permitted. The Company has not yet selected a transition method and is currently evaluating the effect the updated standard will have on its consolidated financial statements and related disclosures. In April 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs, which changes the presentation of debt issuance costs in financial statements. The updated standard requires an entity to present such costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of the costs will continue to be reported as interest expense. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The Company is currently evaluating the effect the updated standard will have on its consolidated balance sheets. In April 2015, the FASB issued ASU No. 2015-05, Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. This standard clarifies whether a customer should account for a cloud computing arrangement as an acquisition of a software license or as a service arrangement by providing characteristics that a cloud computing arrangement must have in order to be accounted for as a software license acquisition. This guidance is effective for annual periods beginning after December 15, 2015. Early adoption is permitted. Upon adoption, an entity may apply the new guidance prospectively or retrospectively to all prior periods presented in the financial statements. The Company is currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures. In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which requires that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined, including the effects on current-period income that would have been recognized in previous periods if the adjustments were recognized as of the acquisition date. The new standard is effective for fiscal years, and interim period within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The Company is currently evaluating the effect that the update standard will have on its consolidated financial statements and related disclosures.	Recent Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. Early adoption is not permitted. The updated standard is effective for fiscal years, and interim reporting periods within those years, beginning after December 15, 2016. The Company has not yet selected a transition method and is currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures. In August 2014, the FASB issued ASU No. 2014-15, Presentation of Financial Statements – Going Concern, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern, related to the disclosures around going concern. The new standard provides guidance around management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company’s financial statements.
Defined Benefit Pension Plan	Defined Benefit Pension Plan During the nine months ended September 30, 2015, the Company recorded an adjustment to correct a prior period accounting error related to the Company’s defined benefit pension plan for one of its foreign subsidiaries. The adjustment increased the Company’s liabilities by approximately $4,200,000 and decreased other comprehensive income by approximately $4,000,000 and income before income taxes by approximately $200,000 as of and during the nine months ended September 30, 2015. The Company does not believe these adjustments are material to the consolidated financial statements for the three and nine months ended September 30, 2015, the expected annual results for 2015 or to the consolidated financial statements of any prior period.

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Fair Value of Financial Assets and Liabilities Measured on Recurring Basis	The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s condensed consolidated balance sheet at September 30, 2015 (in thousands): Balance as of Quoted Prices in Significant Significant Assets: Cash equivalents Money market funds $ 151,691 $ 151,691 $ — $ — Total cash equivalents 151,691 151,691 — — Restricted cash Time deposits 1,983 — 1,983 — Total restricted cash 1,983 — 1,983 — Short-term investments U.S. government agency bonds 23,339 — 23,339 — Time deposits 39,529 — 39,529 — Corporate bonds 346,782 — 346,782 — International government bonds 21,390 — 21,390 — Municipal bonds 187,303 — 187,303 — Total short-term investments 618,343 — 618,343 — Total financial assets $ 772,017 $ 151,691 $ 620,326 $ — The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s condensed consolidated balance sheet at December 31, 2014 (in thousands): Balance as of Quoted Prices in Significant Significant Assets: Cash equivalents Money market funds $ 183,008 $ 183,008 $ — $ — Municipal bonds 1,001 — 1,001 — Total cash equivalents 184,009 183,008 1,001 — Restricted cash — Time deposits 2,058 — 2,058 — Total restricted cash 2,058 — 2,058 — Short-term investments Time deposits 21,726 — 21,726 — Corporate bonds 353,212 — 353,212 — International government bonds 1,501 — 1,501 — Municipal bonds 140,406 — 140,406 — Commercial paper 3,999 — 3,999 — Total short-term investments 520,844 — 520,844 — Total financial assets $ 706,911 $ 183,008 $ 523,903 $ —	The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s consolidated balance sheets at December 31, 2014 (in thousands): Balance as of Quoted Prices in Significant Other Significant Assets Cash equivalents Money market funds $ 183,008 $ 183,008 $ — $ — Municipal bonds 1,001 — 1,001 — Total cash equivalents 184,009 183,008 1,001 — Restricted cash Time deposits 2,058 — 2,058 — Total restricted cash 2,058 — 2,058 — Short-term investments Certificates of deposit 21,726 — 21,726 — Corporate bonds 353,212 — 353,212 — Municipal bonds 140,406 — 140,406 — International government bonds 1,501 — 1,501 — Commercial paper 3,999 — 3,999 — Total short-term investments 520,844 — 520,844 — Total financial assets $ 706,911 $ 183,008 $ 523,903 $ — The following table summarizes the basis used to measure certain financial assets at fair value on a recurring basis in the Company’s consolidated balance sheets at December 31, 2013 (in thousands): Balance as of Quoted Prices in Significant Other Significant Assets Cash equivalents Money market funds $ 26,451 $ 26,451 $ — $ — Total cash equivalents 26,451 26,451 — — Restricted cash Money market funds 758 758 — — Total restricted cash 758 758 — — Short-term investments Time deposits 2,054 — 2,054 — Corporate bonds 33,257 — 33,257 — Municipal bonds 31,487 — 31,487 — Total short-term investments 66,798 — 66,798 — Total financial assets $ 94,007 $ 27,209 $ 66,798 $ —
Schedule of Cash and Cash Equivalents	Cash and cash equivalents consisted of the following (in thousands): September 30, December 31, Demand deposit accounts $ 149,602 $ 108,316 Money market funds 151,691 183,008 Municipal bonds — 1,001 Total cash and cash equivalents $ 301,293 $ 292,325	Cash and cash equivalents consisted of the following at December 31, 2014 and December 31, 2013 (in thousands): December 31, 2014 2013 Demand deposit accounts $ 108,316 $ 298,157 Money market funds 183,008 26,451 Municipal bonds 1,001 —
Short-Term Investments	Short-term investments consisted of the following (in thousands): September 30, 2015 Gross Cost Gross Gross Estimated U.S government agency bonds $ 23,375 $ 3 $ (39 ) $ 23,339 Time deposits 39,529 — — 39,529 Corporate bonds 346,949 141 (308 ) 346,782 International government bonds 21,418 — (28 ) 21,390 Municipal bonds 187,254 83 (34 ) 187,303 Total short-term investments $ 618,525 $ 227 $ (409 ) $ 618,343 December 31, 2014 Gross Cost Gross Gross Estimated Time deposits $ 21,726 $ — $ — $ 21,726 Corporate bonds 353,957 7 (752 ) 353,212 International government bonds 1,504 — (3 ) 1,501 Municipal bonds 140,455 45 (94 ) 140,406 Commercial paper 3,999 — — 3,999 Total short-term investments $ 521,641 $ 52 $ (849 ) $ 520,844	Fair values are based on quoted market prices. Short-term investments consisted of the following at December 31, 2014 and December 31, 2013 (in thousands): December 31, 2014 Gross Gross Gross Estimated Time deposits $ 21,726 $ — $ — $ 21,726 Corporate bonds 353,957 7 (752 ) 353,212 Municipal bonds 140,455 45 (94 ) 140,406 International government bonds 1,504 — (3 ) 1,501 Commercial paper 3,999 — — 3,999 Total short-term investments $ 521,641 $ 52 $ (849 ) $ 520,844 December 31, 2013 Gross Gross Gross Estimated Time deposits $ 2,055 $ — $ (1 ) $ 2,054 Corporate bonds 33,274 33 (50 ) 33,257 Municipal bonds 31,486 16 (15 ) 31,487 Total short-term investments $ 66,815 $ 49 $ (66 ) $ 66,798
Summary of Contractual Underlying Maturities of Short-Term Investments	The following table summarizes the contractual underlying maturities of the Company’s short-term investments (in thousands): September 30, 2015 Less than 1 Year 1 to 3 Years Total U.S government agency bonds $ 597 $ 22,742 $ 23,339 Time deposits 25,951 13,578 39,529 Corporate bonds 203,039 143,743 346,782 International government bonds 15,192 6,198 21,390 Municipal bonds 131,167 56,136 187,303 Total short-term investments $ 375,946 $ 242,397 $ 618,343 December 31, 2014 Less than 1 Year 1 to 3 Years Total Time deposits $ 21,479 $ 247 $ 21,726 Corporate bonds 240,570 112,642 353,212 International government bonds 1,501 — 1,501 Municipal bonds 87,615 52,791 140,406 Commercial paper 3,999 — 3,999 Total short-term investments $ 355,164 $ 165,680 $ 520,844	The following table summarizes the contractual underlying maturities of the Company’s short-term investments at December 31, 2014 and December 31, 2013 (in thousands): December 31, 2014 Less than 1 to 3 Years Total Time deposits $ 21,479 $ 247 $ 21,726 Corporate bonds 240,570 112,642 353,212 Municipal bonds 87,615 52,791 140,406 International government bonds 1,501 — 1,501 Commercial paper 3,999 — 3,999 Total short-term investments $ 355,164 $ 165,680 $ 520,844 December 31, 2013 Less than 1 to 3 Years Total Time deposits $ 500 $ 1,554 $ 2,054 Corporate bonds 11,164 22,093 33,257 Municipal bonds 3,031 28,456 31,487 Total short-term investments $ 14,695 $ 52,103 $ 66,798
Summary of Depreciation Expenses on Internally Developed Software and Website Development Costs	The Company recorded depreciation expense on internally developed software and website development costs as follows (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Depreciation expense on internally developed software and website development costs $ 1,677 $ 1,343 $ 4,867 $ 3,947	The Company recorded depreciation expense on internally developed software and website development costs as follows for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Depreciation expense on internally developed software and website development costs $ 5,471 $ 3,939 $ 2,874
Summary of Excess Tax (Expense) Benefit	The following table summarizes the excess tax benefit that the Company recorded (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Excess tax benefit from stock-based compensation, net $ 5,200 $ 1,362 $ 7,494 $ 2,583	The following table summarizes the excess tax benefit that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Excess tax benefit from stock-based compensation, net $ 2,743 $ 8,226 $ 7,122
Summary of Foreign Exchange Loss	The following table summarizes the foreign exchange loss that the Company recorded (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Foreign exchange loss $ 279 $ 1,432 $ 930 $ 6,421	The following table summarizes the foreign exchange loss that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Foreign exchange loss $ 7,138 $ 5,964 $ 2,618
Schedule of Fair Value and Notional Amounts of Outstanding or Unsettled Derivative Instruments	The following table shows the fair value and notional amounts of the Company’s outstanding or unsettled derivative instruments that are not designated as hedging instruments covering foreign currency exposures as of September 30, 2015 which settled October 2, 2015 (in thousands): September 30, 2015 Significant Other Observable Inputs (Level 2) Gross Amount of Gross Amounts Net Amount U.S. Dollar Prepaid expense and other current assets $ 1,173 $ — $ 1,173 $ 41,301 Accrued expenses (656 ) — (656 ) 129,303 Total $ 517 $ — $ 517 $ 170,604 In addition to the notional amounts listed above, the Company entered into new derivative contracts with notional amounts of $157,735,000 on September 30, 2015 with a closing date of January 5, 2016. The following table shows the fair value and notional amounts of the Company’s outstanding or unsettled derivative instruments that are not designated as hedging instruments covering foreign currency exposures as of December 31, 2014 which settled January 2, 2015 (in thousands): December 31, 2014 Significant Other Gross Amount of Gross Amounts Net Amount U.S. Dollar Prepaid expense and other current assets $ 4,506 $ — $ 4,506 $ 157,164 Accrued expenses (67 ) — (67 ) 11,562 Total $ 4,439 $ — $ 4,439 $ 168,726	The following table shows the fair value and notional amounts of the Company’s outstanding or unsettled derivative instruments that are not designated as hedging instruments covering foreign currency exposures during the year ended December 31, 2014 and closing January 2, 2015 (in thousands): Balance Sheet Caption December 31, 2014 Significant Other U.S. Dollar Gross Amount of Gross Amounts Net Amount Prepaid expenses and other current assets $ 4,506 $ — $ 4,506 $ 157,164 Accrued expenses (67 ) — (67 ) 11,562 Total $ 4,439 $ — $ 4,439 $ 168,726 In addition to the notional amounts listed above, the Company also had $165,454,000 of derivatives entered into on December 31, 2014 with a closing date of April 2, 2015. The following table shows the fair value and notional amounts of the Company’s outstanding or unsettled derivative instruments that are not designated as hedging instruments covering foreign currency exposures during the year ended December 31, 2013 (in thousands): Balance Sheet Caption December 31, 2013 Significant Other U.S. Dollar Gross Amount of Gross Amounts Net Amount Prepaid expenses and other current assets $ 363 $ — $ 363 $ 20,520 Accrued expenses (979 ) — (979 ) 84,292 Total $ (616 ) $ — $ (616 ) $ 104,812

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value of Acquisition Amounts at Acquisition Date	The following table summarizes the Company’s acquisitions during the years ended December 31, 2014, 2013 and 2012 with amounts shown below as fair values at each respective acquisition date (in thousands): Glad to Have Stayz Bookabach travelmob Toprural Year acquired 2014 2013 2013 2013 2012 Net tangible assets (liabilities) acquired Cash $ 25 $ 4,942 $ 395 $ 63 $ 3,220 Deferred revenue (65 ) (2,234 ) (350 ) (43 ) (2,269 ) Amounts payable to property owners — (4,187 ) (194 ) (473 ) — Other 17 (365 ) 228 (123 ) (315 ) Total tangible assets (liabilities) acquired (23 ) (1,844 ) 79 (576 ) 636 Deferred tax liabilities (1,653 ) (5,313 ) (228 ) (513 ) (3,193 ) Trade name 1,177 5,224 161 607 1,060 Developed technology 3,760 1,735 64 2,937 2,144 Customer relationships 1,643 18,288 446 1,123 7,440 Goodwill 11,647 177,777 3,514 16,833 11,190 Non-competition agreements 240 1,387 300 150 — Redeemable noncontrolling interests — — (1,938 ) (9,028 ) — Aggregate purchase price 16,791 197,254 2,398 11,533 19,277 Less: cash acquired (25 ) (4,942 ) (395 ) (63 ) (3,220 ) $ 16,766 $ 192,312 $ 2,003 $ 11,470 $ 16,057
Weighted-Average Amortization Period in Total and by Major Definite-Lived Intangible Asset Class and Acquisition	The following table summarizes the Company’s weighted-average amortization period, in total and by major finite-lived intangible asset class, by acquisition during the years ended December 31, 2014, 2013 and 2012 (in years): Glad to Stayz Bookabach travelmob Toprural Developed technology 5.0 2.0 1.8 7.0 4.0 Customer relationships 8.0 11.0 11.0 13.0 8.0 Non-competition agreements 3.0 3.0 3.0 3.0 — Trade names 10.0 10.0 10.0 10.0 10.0 Total weighted-average amortization period 6.5 9.8 7.8 8.7 7.4
Stayz [Member]
Pro Forma Results	The unaudited pro forma supplemental information prepared by the Company is not necessarily indicative of the results expected in future periods or the results that actually would have been realized had the acquired business and the Company been a combined company during the specified periods. Year Ended December 31, 2013 2012 Pro forma total revenue $ 370,620 $ 305,904 Pro forma net income 28,687 17,855
Toprural [Member]
Pro Forma Results	The unaudited pro forma supplemental information prepared by the Company is not necessarily indicative of the results expected in future periods or the results that actually would have been realized had the acquired business and the Company been a combined company during the specified periods. Year Ended 2012 Pro forma total revenue $ 281,858 Pro forma net income 14,959

Goodwill and Other Intangible30

Goodwill and Other Intangible Assets (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Goodwill Balance	Changes in the Company’s goodwill balance are summarized in the table below (in thousands): Balance at December 31, 2013 $ 507,611 Acquired in business combinations 11,647 Foreign currency translation adjustment (26,098 ) Post-acquisition goodwill adjustment for Stayz 511 Balance at December 31, 2014 493,671 Foreign currency translation adjustment (33,622 ) Balance at September 30, 2015 $ 460,049	Changes in the Company’s goodwill balance for the years ended December 31, 2014 and 2013 are summarized in the table below (in thousands). Balance at December 31, 2012 $ 312,412 Acquired in business combinations 198,124 Foreign currency translation adjustment (2,925 ) Balance at December 31, 2013 $ 507,611 Acquired in business combinations 11,647 Foreign currency translation adjustment (26,098 ) Post-acquisition goodwill adjustment for the Stayz acquisition 511 Balance at December 31, 2014 $ 493,671
Amortized Finite-Lived Intangible Assets	The Company’s finite-lived intangible assets are summarized in the table below (in thousands): September 30, 2015 December 31, 2014 Useful Life Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Trade names and trademarks 10 $ 28,525 $ (9,572 ) $ 18,953 $ 30,316 $ (8,396 ) $ 21,920 Developed technology 2-8 20,290 (14,748 ) 5,542 21,293 (13,231 ) 8,062 Customer relationships 6-14 53,436 (27,650 ) 25,786 57,656 (25,512 ) 32,144 Noncompete agreements and domain names 2-5 1,949 (1,256 ) 693 2,224 (923 ) 1,301 Total $ 104,200 $ (53,226 ) $ 50,974 $ 111,489 $ (48,062 ) $ 63,427	The finite-lived intangible assets that are being amortized are summarized in the table below (in thousands): December 31, 2014 December 31, 2013 Useful Life Gross Accumulated Net Gross Accumulated Net Trade names and trademarks 10 $ 30,316 $ (8,396 ) $ 21,920 $ 30,066 $ (5,050 ) $ 25,016 Developed technology 2-8 21,293 (13,231 ) 8,062 31,513 (23,646 ) 7,867 Customer relationships 6-14 57,656 (25,512 ) 32,144 80,510 (41,739 ) 38,771 Noncompete agreements and domain names 2-5 2,224 (923 ) 1,301 5,163 (3,181 ) 1,982 Total $ 111,489 $ (48,062 ) $ 63,427 $ 147,252 $ (73,616 ) $ 73,636
Summary of Amortization Expenses	The following table summarizes amortization expense (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Amortization expense $ 2,819 $ 3,397 $ 8,713 $ 10,163	The following table summarizes the amortization expense that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Amortization expense $ 13,916 $ 11,668 $ 12,438
Expected Future Annual Amortization Expense for Finite-Lived Intangible Assets		Expected future annual amortization expense for definite-lived intangible assets as of December 31, 2014 is as follows (in thousands): 2015 $ 11,772 2016 9,132 2017 8,042 2018 7,738 2019 7,057 Thereafter 19,686 $ 63,427
Indefinite-Lived Intangible Assets	The Company has the following indefinite-lived intangible assets recorded in its consolidated balance sheet (in thousands): September 30, December 31, 2015 2014 Trade names $ 7,029 $ 7,029	The Company has the following indefinite-lived intangible assets recorded in its consolidated balance sheets as of December 31, 2014 and 2013, respectively (in thousands): December 31, 2014 2013 Trademarks, trade names and other $ 7,029 $ 7,029

Property and Equipment, net (Ta

Property and Equipment, net (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and equipment consists of the following at December 31, 2014 and 2013, respectively, (in thousands): December 31, 2014 2013 Computer equipment and purchased software $ 31,566 $ 24,074 Internal-use software and website development costs 36,038 30,523 Furniture and fixtures 7,915 5,999 Leasehold improvements 20,922 13,999 96,441 74,595 Less accumulated depreciation (40,268 ) (34,788 ) $ 56,173 $ 39,807
Schedule of Depreciation Expense	The following table summarizes the depreciation expense that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Depreciation expense $ 16,926 $ 13,399 $ 11,051

Accrued Expenses (Tables)

Accrued Expenses (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued Expenses	The Company’s accrued expenses are comprised of the following (in thousands): September 30, December 31, 2015 2014 Compensation and related benefits $ 19,591 $ 21,413 Taxes 6,810 4,954 Marketing 5,131 4,115 Gift cards 4,103 5,654 Contracting, consulting and professional fees 3,111 3,254 Traveler guarantee 1,246 1,790 Foreign exchange-forward contracts 683 99 Other 9,771 8,976 Total $ 50,446 $ 50,255	The Company’s accrued expenses are comprised of the following at December 31, 2014 and 2013, respectively (in thousands): December 31, 2014 2013 Compensation and related benefits $ 21,413 $ 21,700 Gift cards 5,654 6,090 Contracting, consulting and professional fees 3,254 4,494 Taxes 4,954 3,425 Marketing 4,115 3,197 Foreign exchange – forward contracts 99 979 Traveler guarantee liability 1,790 956 Other 8,976 13,784 Total $ 50,255 $ 54,625

Convertible Senior Notes (Table

Convertible Senior Notes (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Summary of Convertible Senior Notes	Equity Carrying Value of Convertible Component Senior Notes as of Recorded September 30, December 31, (In thousands) Par Value at Issuance 2015 2014 0.125% Convertible Senior Notes due April 1, 2019 $ 402,500 $ 90,887 (1) $ 329,905 $ 316,181 (1) This amount represents the equity component recorded at the initial issuance of the 0.125% convertible senior notes.	(In thousands) Par Value Equity Carrying Value of Convertible December 31, December 31, 0.125% Convertible Senior Notes due April 1, 2019 $ 402,500 $ 90,887 (1) $ 316,181 $ — (1) This amount represents the equity component recorded at the initial issuance of the 0.125% convertible senior notes.
Schedule of Conversion of Senior Notes to Common Stock	Conversion Initial Free 0.125% Convertible Senior Notes 19.1703 $ 52.16 October 1, 2018	Conversion Initial Free 0.125% Senior Notes 19.1703 $ 52.16 October 1, 2018
Schedule of Convertible Senior Notes	The Notes consist of the following (in thousands): September 30, December 31, 2015 2014 Liability component: Principal: 0.125% Convertible Senior Notes $ 402,500 $ 402,500 Less: debt discount, net 0.125% Convertible Senior Notes (72,595 ) (86,319 ) Net carrying amount $ 329,905 $ 316,181	The Notes consist of the following (in thousands): December 31, December 31, Liability component: Principal: 0.125% Senior Notes $ 402,500 $ — Less: debt discount, net 0.125% Senior Notes (86,319 ) — Net carrying amount $ 316,181 $ —
Summary of Hedge Notes	Date Purchase Shares underlying Note Hedges March 2014 $ 85,853 7,716,049	Date Purchase Shares Note Hedges March 2014 $ 85,853 7,716,049
Components of Warrants	Date Proceeds Shares Strike Warrants March 2014 $ 38,278 7,716,049 $ 81.14	Date Proceeds Shares Strike Warrants March 2014 $ 38,278 7,716,049 $ 81.14
Interest Expense Recognized Related To Notes	The following table sets forth total interest expense recognized related to the Notes (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 0.125% coupon $ 126 $ 126 $ 378 $ 252 Amortization of debt issuance costs 14 13 40 26 Amortization of debt discount 4,641 4,378 13,724 8,694 Total $ 4,781 $ 4,517 $ 14,142 $ 8,972	The following table sets forth total interest expense recognized related to the Notes for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 0.125% coupon $ 378 — — Amortization of debt issuance costs 39 — — Amortization of debt discount 13,137 — — Total $ 13,554 $ — $ —

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Future Minimum Lease Payments under Noncancellable Operating Leases		Future minimum lease payments under noncancellable operating leases at December 31, 2014 are as follows (in thousands): 2015 $ 8,073 2016 8,487 2017 8,324 2018 7,486 2019 6,601 Thereafter 21,870 Total minimum lease payments $ 60,841
Summary of Rental Expense	The following table summarizes total rental expense (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Rental expense $ 1,733 $ 1,911 $ 5,754 $ 5,134	The following table summarizes the total rental expense that the Company recorded for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Rental expense $ 6,994 $ 5,202 $ 4,492
Changes for Traveler Guarantees	Expected future claims for traveler guarantees, which are presented as a current liability in the Company’s condensed consolidated balance sheets, and changes for the guarantees, are as follows (in thousands): Traveler guarantee liability at December 31, 2013 $ 956 Costs accrued for new and expected future claims 3,576 Guarantee obligations honored (2,742 ) Traveler guarantee liability at December 31, 2014 $ 1,790 Costs accrued for new and expected future claims 1,216 Guarantee obligations honored (1,760 ) Traveler guarantee liability at September 30, 2015 $ 1,246	Expected future claims for traveler guarantees, which are presented as a current liability in the Company’s consolidated balance sheets, and changes for the guarantees are as follows (in thousands): Traveler guarantee liability at December 31, 2012 $ 566 Costs accrued for new vacation rentals 2,230 Guarantee obligations honored (1,840 ) Traveler guarantee liability at December 31, 2013 $ 956 Costs accrued for new vacation rentals 3,576 Guarantee obligations honored (2,742 ) Traveler guarantee liability at December 31, 2014 $ 1,790

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Option Activity		A summary of the Company’s stock option activity under all Plans is as follows: Number of Weighted Weighted Aggregate (years) (in thousands) Outstanding at December 31, 2012 10,404,703 $ 17.37 7.5 $ 57,020 Granted 1,756,630 30.18 Exercised (3,186,491 ) 15.12 Forfeited (474,695 ) 22.87 Cancelled (20,885 ) 23.03 Outstanding at December 31, 2013 8,479,261 $ 20.49 7.1 $ 172,921 Granted 972,865 35.50 Exercised (1,615,116 ) 15.84 Forfeited (236,714 ) 26.66 Cancelled — — Outstanding at December 31, 2014 7,600,296 $ 23.20 6.8 $ 57,663 Vested and expected to vest At December 31, 2013 8,226,494 $ 20.31 7.1 $ 169,248 At December 31, 2014 7,433,326 $ 23.02 6.8 $ 57,447 Exercisable options At December 31, 2013 4,583,432 $ 16.82 6.2 $ 110,286 At December 31, 2014 5,079,091 $ 20.06 6.1 $ 51,494
Weighted Average Grant Date Fair Value of Options and Restricted Stock		The weighted average grant date fair value of the options and restricted stock are summarized as follows: Year Ended December 31, 2014 2013 2012 Per share of options granted $ 13.46 $ 13.81 $ 12.07 Per share of restricted stock and restricted stock units granted $ 36.33 $ 29.36 $ 24.88
Restricted Stock Activity Under 2004 Plan and 2011 Plan		A summary of the Company’s restricted stock activity under the 2004 Plan and 2011 Plan is as follows: Number of Unvested balances at December 31, 2012 806,317 Awards granted 1,658,132 Awards vested (241,517 ) Awards forfeited (185,037 ) Unvested balances at December 31, 2013 2,037,895 Awards granted 1,634,392 Awards vested (565,733 ) Awards forfeited (251,599 ) Unvested balances at December 31, 2014 2,854,955
Estimated Fair Value of Stock Option Grants at Date of Grant using Black-Scholes Option Pricing Model with Weighted Average Assumptions		The fair value of stock option grants has been estimated at the date of grant using the Black–Scholes option pricing model with the following weighted average assumptions: Year Ended December 31, 2014 2013 2012 Risk-free interest rate 1.62% to 1.78% 0.65% to 1.41% 0.78% to 1.32% Expected term 4.93 to 5.10 years 5.32 to 5.57 years 5.59 to 5.83 years Dividend yield 0.00% 0.00% 0.00% Expected volatility 38.70% to 42.50% 46.90% to 50.80% 50.60% to 55.40%
Total Stock-Based Compensation Expense	The following table summarizes the total stock-based compensation expense (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Cost of revenue $ 881 $ 847 $ 2,615 $ 2,415 Product development 3,931 3,485 10,769 9,589 Sales and marketing 3,152 2,763 9,003 7,868 General and administrative 4,654 5,576 15,100 15,710 Total $ 12,618 $ 12,671 $ 37,487 $ 35,582	The following table summarizes the total stock-based compensation expense for the years ended December 31, 2014, 2013 and 2012 (in thousands): Year Ended December 31, 2014 2013 2012 Cost of revenue $ 3,245 $ 3,064 $ 2,675 Product development 13,174 9,515 5,642 Sales and marketing 10,805 8,488 6,629 General and administrative 21,294 16,820 12,087 $ 48,518 $ 37,887 $ 27,033

Redeemable Noncontrolling Int36

Redeemable Noncontrolling Interests (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Noncontrolling Interest [Abstract]
Schedule of Changes of Redeemable Noncontrolling Interests	Changes in the Company’s redeemable noncontrolling interests are summarized in the table below (in thousands): Balance at December 31, 2013 $ 10,584 Net loss attributable to noncontrolling interests (1,839 ) Changes to redemption value of noncontrolling interests 2,421 Repurchase of redeemable noncontrolling interests (1,461 ) Currency translation adjustments 37 Balance at December 31, 2014 $ 9,742 Net loss attributable to noncontrolling interests (1,623 ) Changes to redemption value of noncontrolling interests 914 Balance at September 30, 2015 $ 9,033	Changes in the Company’s redeemable noncontrolling interests for the year ended December 31, 2014 and 2013 are as follows (in thousands): Balance at December 31, 2012 $ — Fair value at acquisition 10,966 Net loss attributable to noncontrolling interests (395 ) Currency translation adjustments 13 Balance at December 31, 2013 $ 10,584 Net loss attributable to noncontrolling interests (1,839 ) Changes to redemption value of noncontrolling interests 2,421 Repurchase of redeemable noncontrolling interests (1,461 ) Currency translation adjustments 37 Balance at December 31, 2014 $ 9,742

Accumulated Other Comprehensi37

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated other comprehensive loss consists of the following (in thousands): September 30, December 31, 2015 2014 Foreign currency translation adjustments $ (56,276 ) $ (27,252 ) Unrealized losses on short-term investments (183 ) (801 ) Defined benefit pension plan adjustments (4,149 ) — Total $ (60,608 ) $ (28,053 )	Accumulated other comprehensive loss consists of the following at December 31, 2014 and 2013, respectively (in thousands): December 31, 2014 2013 Foreign currency translation $ (27,252 ) $ (6,728 ) Unrealized losses on short-term investments (801 ) (19 ) Total $ (28,053 ) $ (6,747 )

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Before Income Taxes		Income before income taxes includes the following components (in thousands): Year Ended December 31, 2014 2013 2012 Domestic $ 15,523 $ 27,817 $ 19,934 Foreign 5,716 1,198 8,202 Total $ 21,239 $ 29,015 $ 28,136
Income Tax Expenses (Benefit)	The following table summarizes the total income tax expense that the Company recorded, and the related effective tax rate, for the three and nine months ended September 30, 2015 and 2014 (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Income tax expense $ 5,625 $ 845 $ 9,757 $ 5,909 Effective tax rate 36.3 % 13.9 % 65.1 % 31.5 %	The income tax expense (benefit) is comprised of the following (in thousands): Year Ended December 31, 2014 2013 2012 Current Federal $ — $ — $ — State 250 1,116 1,105 Foreign 5,999 4,771 9,625 Deferred Federal 5,502 7,733 7,976 State (831 ) 98 (524 ) Foreign (5,879 ) (1,511 ) (5,425 ) Change in valuation allowance 2,231 (483 ) 418 $ 7,272 $ 11,724 $ 13,175
Deferred Tax Assets (Liabilities)		Deferred tax assets (liabilities) consist of the following (in thousands): December 31, 2014 2013 Deferred tax assets: Net operating loss carryforward $ 6,816 $ 6,760 Tax credits 1,082 551 Accrued liabilities 8,960 6,615 Stock compensation 16,621 11,143 Gift card deferred revenue and redemption liability 1,451 1,346 Other deferred revenue 1,413 1,304 Other 959 310 Total deferred tax assets 37,302 28,029 Deferred tax liabilities: Intangible assets (37,095 ) (34,473 ) Property and equipment (12,170 ) (6,530 ) Prepaid expenses (540 ) (907 ) Other (1,339 ) (536 ) Total deferred tax liabilities (51,144 ) (42,446 ) Valuation allowance (2,463 ) (362 ) Net deferred tax liabilities $ (16,305 ) $ (14,779 )
Summary of Operating Loss Carryforwards and Expiration		The following is a summary of the Company’s loss carryforwards and their expiration at December 31, 2013 and 2014, respectively (in thousands): December 31, Expiration 2014 2013 Federal loss carryforwards 2025-2034 $ 15,722 $ 8,474 State loss carryforwards 2025-2034 396 447 Federal research and development credit carryforwards 2027-2034 8,386 6,050 State research and development credit carryforwards 2034 1,857 498 Texas margin tax credit carryforwards Indefinite 310 310 Foreign loss carryforwards 2018-Indefinite (1) 26,046 25,690 Foreign local loss carryforwards 2018-2020 517 686 Federal foreign tax credit carryforwards 2020-2024 1,351 1,342 (1) Of the Company’s foreign net operating loss carryforwards, $11,697,000 will expire between 2018 and 2030 if not utilized, and $14,349,000 will carryforward indefinitely.
Reconciliation of Amount of Income Tax Expense Results from Applying Federal Statutory Income Tax Rate to Income (Loss) Before Income Taxes		The following is a reconciliation of the amount of the income tax expense that results from applying the federal statutory income tax rate to income before income taxes to the reported income tax expense (in thousands): Year Ended December 31, 2014 2013 2012 Federal tax expense at statutory rate $ 7,433 $ 10,155 $ 9,848 State taxes, net of federal tax benefit (552 ) 958 647 Foreign tax rate differential (2,166 ) (1,191 ) (2,481 ) Deferred charges 1,908 1,959 1,582 Stock compensation 2,430 566 1,679 Research and development credit (2,346 ) (3,220 ) — Tax basis in Spanish intangibles (2,770 ) — — Non-deductible expenses 331 2,342 355 Other activity in unrecognized tax benefits 816 540 2,325 Other (43 ) 98 (1,198 ) Net increase (decrease) in valuation allowance 2,231 (483 ) 418 $ 7,272 $ 11,724 $ 13,175
Aggregate Changes in Balance of Unrecognized tax benefits, Excluding Interest and Penalties		The aggregate changes in the balance of unrecognized tax benefits were as follows, excluding interest and penalties (in thousands): (in thousands) Year Ended December 31, 2014 2013 2012 Balance, beginning of year $ 7,555 $ 5,590 $ 3,658 Increases for tax positions related to the current year 2,130 1,013 1,815 Increases for tax positions related to prior years 2,166 1,702 1,135 Decreases for tax positions related to prior years (556 ) (369 ) (739 ) Reductions due to lapsed statute of limitations (1,221 ) (381 ) (279 ) Balance, end of year $ 10,074 $ 7,555 $ 5,590
Schedule of Open Tax Years by Jurisdiction		Internationally, the following years remain open to examination: Jurisdiction Open Tax Years Germany 2011-2014 France 2012-2014 Brazil 2009-2014 United Kingdom 2011-2014 Switzerland 2010-2014 Australia 2010-2014 Spain 2010-2014 Thailand 2013-2014 Singapore 2011-2014 New Zealand 2010-2014 Colombia 2013-2014 Italy 2013-2014

Net Income Per Share Attribut39

Net Income Per Share Attributable to HomeAway, Inc. (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Income Per Share Attributable to HomeAway, Inc.	The following table sets forth the computation of basic and diluted net income per share of common stock (in thousands, except per share amounts): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Numerator Net income attributable to HomeAway, Inc. $ 10,417 $ 4,912 $ 5,942 $ 13,222 Denominator Weighted average common shares outstanding - basic 95,716 94,106 95,162 93,507 Dilutive effect of stock options, warrants and restricted stock units 1,972 2,283 2,227 2,851 Weighted average common shares outstanding - diluted 97,688 96,389 97,389 96,358 Net income per share attributable to HomeAway, Inc.: Basic $ 0.11 $ 0.05 $ 0.06 $ 0.14 Diluted $ 0.11 $ 0.05 $ 0.06 $ 0.14	The following table sets forth the computation of basic and diluted net income per share attributable to HomeAway, Inc. (in thousands except share and per share amounts): Year Ended December 31, 2014 2013 2012 Numerator Net income attributable to HomeAway, Inc. $ 13,384 $ 17,686 $ 14,961 Denominator Weighted average common shares outstanding-basic 93,727 85,378 82,382 Dilutive effect of stock options, warrants and restricted stock units 2,754 2,881 2,560 Weighted average common shares outstanding-diluted 96,481 88,259 84,942 Net income per share attributable to HomeAway, Inc.: Basic $ 0.14 $ 0.21 $ 0.18 Diluted $ 0.14 $ 0.20 $ 0.18
Common Equivalent Shares Excluded from Calculation of Diluted Net Loss Per Share Attributable to HomeAway, Inc as their Inclusion Would have been Anti-Dilutive	The following common equivalent shares were excluded from the calculation of diluted net loss per share attributable to HomeAway, Inc. as their inclusion would have been anti-dilutive (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Stock options 3,295 2,604 3,089 2,038 Restricted stock units 547 62 21 49 Warrants 7,716 7,716 7,716 7,716 Total common equivalent shares excluded 11,558 10,382 10,826 9,803	The following common equivalent shares were excluded from the calculation of net income per share attributable to HomeAway, Inc. as their inclusion would have been anti-dilutive (in thousands): Year Ended December 31, 2014 2013 2012 Stock options 2,178 3,153 5,151 Restricted stock units 57 4 7 Warrants 7,716 — — Total common equivalent shares excluded 9,951 3,157 5,158

Domestic and Foreign Operatio40

Domestic and Foreign Operations (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Revenue from Operations in Domestic and Foreign Regions	The Company has operations in domestic and foreign regions, specifically in Europe, South America and the Asia Pacific region. Information about these operations is presented below (in thousands): Year Ended December 31, 2014 2013 2012 Revenue: United States $ 262,412 $ 211,473 $ 173,078 France 59,306 52,222 42,451 United Kingdom 48,996 41,231 35,656 Australia 25,888 3,300 1,141 Germany 24,410 20,719 16,194 Other international 25,750 17,544 11,884 Total revenue $ 446,762 $ 346,489 $ 280,404
Identifiable Long-Lived Tangible Assets in Domestic and Foreign Regions	Year Ended December 31, 2014 2013 2012 Revenue: United States $ 262,412 $ 211,473 $ 173,078 France 59,306 52,222 42,451 United Kingdom 48,996 41,231 35,656 Australia 25,888 3,300 1,141 Germany 24,410 20,719 16,194 Other international 25,750 17,544 11,884 Total revenue $ 446,762 $ 346,489 $ 280,404 Year Ended December 31, 2014 2013 2012 Identifiable long-lived tangible assets: United States $ 85,116 $ 43,673 $ 32,936 International 10,167 8,472 7,431 Total identifiable long-lived tangible assets $ 95,283 $ 52,145 $ 40,367

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Summary of Total Expenses for Retirement Plans	Our total expense for these retirement plans is presented below (in thousands): Year Ended December 31, 2014 2013 2012 Retirement plan contribution expense $ 1,975 $ 1,907 $ 1,185

Subsequent Events (Tables)

Subsequent Events (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Subsequent Events [Abstract]
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet September 30, 2015 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 160,444 $ 16,647 $ 124,202 $ — $ 301,293 Short-term investments 618,343 — — — 618,343 Accounts receivable, net — 14,976 9,043 — 24,019 Income tax receivable 796 — 884 — 1,680 Prepaid expenses and other current assets 4,525 10,532 3,212 — 18,269 Deferred tax assets 7,660 123 1,601 — 9,384 Intercompany receivable 790 13,700 2,482 (16,972 ) — Total current assets 792,558 55,978 141,424 (16,972 ) 972,988 Investment in subsidiaries 360,176 — — (360,176 ) — Property and equipment, net 11,259 43,695 5,819 — 60,773 Goodwill — 210,300 249,749 — 460,049 Intangible assets, net 1,628 29,234 27,141 — 58,003 Non-marketable investments 37,506 — 2,043 — 39,549 Deferred tax assets — — 880 — 880 Other non-current assets 188 318 5,789 — 6,295 Intercompany loans receivable 109,620 18,336 — (127,956 ) — Total assets $ 1,312,935 $ 357,861 $ 432,845 $ (505,104 ) $ 1,598,537 Liabilities, redeemable noncontrolling interests and stockholders’ equity Current liabilities: Accounts payable $ — $ 4,280 $ 3,207 $ — $ 7,487 Income tax payable 307 (307 ) 907 — 907 Accrued expenses 183 28,800 21,463 — 50,446 Deferred revenue — 125,982 67,787 — 193,769 Intercompany payable 231 3,051 13,690 (16,972 ) — Total current liabilities 721 161,806 107,054 (16,972 ) 252,609 Convertible senior notes, net 329,905 — — — 329,905 Deferred revenue, less current portion — 2,943 38 — 2,981 Deferred tax liabilities 20,167 1,775 2,434 — 24,376 Other non-current liabilities 2,326 8,918 8,573 — 19,817 Intercompany loans payable — — 127,956 (127,956 ) — Total liabilities 353,119 175,442 246,055 (144,928 ) 629,688 Redeemable noncontrolling interests — — 9,033 — 9,033 Total stockholders’ equity 959,816 182,419 177,757 (360,176 ) 959,816 Total liabilities, redeemable noncontrolling interests and stockholders’ equity $ 1,312,935 $ 357,861 $ 432,845 $ (505,104 ) $ 1,598,537	Condensed Consolidating Balance Sheet December 31, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 174,337 $ 19,977 $ 98,011 $ — $ 292,325 Short-term investments 520,844 — — — 520,844 Accounts receivable, net — 12,113 11,076 — 23,189 Income tax receivable 1,168 — 732 — 1,900 Prepaid expenses and other current assets 6,935 7,972 3,006 — 17,913 Deferred tax assets 6,875 123 1,776 — 8,774 Intercompany receivable 324 7,156 3 (7,483 ) — Total current assets 710,483 47,341 114,604 (7,483 ) 864,945 Investment in subsidiaries 399,286 — — (399,286 ) — Property and equipment, net 7,457 42,022 6,694 — 56,173 Goodwill — 210,300 283,371 — 493,671 Intangible assets, net 1,816 32,938 35,702 — 70,456 Non-marketable investments 35,285 — — — 35,285 Deferred tax assets — — 1,545 — 1,545 Other non-current assets 228 351 7,474 — 8,053 Intercompany loans receivable 117,480 18,336 — (135,816 ) — Total assets $ 1,272,035 $ 351,288 $ 449,390 $ (542,585 ) $ 1,530,128 Liabilities, redeemable noncontrolling interests and stockholders’ equity Current liabilities: Accounts payable $ — $ 6,765 $ 1,516 $ — $ 8,281 Income tax payable (153 ) 153 1,344 — 1,344 Accrued expenses 202 29,837 20,216 — 50,255 Deferred revenue — 103,571 66,951 — 170,522 Intercompany payable 1,074 137 6,272 (7,483 ) — Total current liabilities 1,123 140,463 96,299 (7,483 ) 230,402 Convertible senior notes, net 316,181 — — — 316,181 Deferred revenue, less current portion — 3,133 46 — 3,179 Deferred tax liabilities 20,812 1,777 4,035 — 26,624 Other non-current liabilities 2,111 6,407 3,674 — 12,192 Intercompany loans payable — — 135,816 (135,816 ) — Total liabilities 340,227 151,780 239,870 (143,299 ) 588,578 Redeemable noncontrolling interests — — 9,742 — 9,742 Total stockholders’ equity 931,808 199,508 199,778 (399,286 ) 931,808 Total liabilities, redeemable noncontrolling interests and stockholders’ equity $ 1,272,035 $ 351,288 $ 449,390 $ (542,585 ) $ 1,530,128

Guarantor Footnote (Tables)

Guarantor Footnote (Tables)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Consolidating Statement of Operations	Condensed Consolidating Statement of Operations Three months ended September 30, 2015 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 64,319 $ 43,962 $ (1,797 ) $ 106,484 Other — 22,688 2,217 (707 ) 24,198 Total revenue — 87,007 46,179 (2,504 ) 130,682 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 40 16,671 5,154 (2,504 ) 19,361 Product development 17 19,307 2,734 — 22,058 Sales and marketing 110 20,028 22,825 — 42,963 General and administrative 1,126 17,451 5,297 — 23,874 Amortization expense 63 1,327 1,429 — 2,819 Intercompany (income) expense, net — (3,541 ) 3,541 — — Operating income (loss) (1,356 ) 15,764 5,199 — 19,607 Other income (expense): Equity in earnings of consolidated subsidiaries 14,092 — — (14,092 ) — Interest expense (4,718 ) — (288 ) 288 (4,718 ) Interest income 999 86 130 (288 ) 927 Other expense, net 151 (185 ) (304 ) — (338 ) Total other income (expense), net 10,524 (99 ) (462 ) (14,092 ) (4,129 ) Income before income taxes 9,168 15,665 4,737 (14,092 ) 15,478 Income tax (expense) benefit 1,249 (5,962 ) (912 ) — (5,625 ) Net income 10,417 9,703 3,825 (14,092 ) 9,853 Less: Impact of noncontrolling interests, net of tax — — (564 ) — (564 ) Net income attributable to HomeAway, Inc. $ 10,417 $ 9,703 $ 4,389 $ (14,092 ) $ 10,417 Comprehensive income (loss) attributable to HomeAway, Inc. $ 10,693 $ 9,703 $ (15,314 ) $ (14,092 ) $ (9,010 ) Condensed Consolidating Statement of Operations Three months ended September 30, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 51,232 $ 46,792 $ (1,423 ) $ 96,601 Other — 19,687 1,884 (1,060 ) 20,511 Total revenue — 70,919 48,676 (2,483 ) 117,112 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 37 13,993 5,379 (2,483 ) 16,926 Product development 23 17,024 3,165 — 20,212 Sales and marketing 98 18,218 23,918 — 42,234 General and administrative 744 16,383 5,868 — 22,995 Amortization expense 63 1,370 1,964 — 3,397 Intercompany (income) expense, net — (6,311 ) 6,311 — — Operating income (965 ) 10,242 2,071 — 11,348 Other income (expense): Equity in earnings of consolidated subsidiaries 7,163 — — (7,163 ) — Interest expense (4,373 ) — (266 ) 266 (4,373 ) Interest income 585 87 146 (266 ) 552 Other expense, net (2 ) (92 ) (1,340 ) — (1,434 ) Total other income (expense), net 3,373 (5 ) (1,460 ) (7,163 ) (5,255 ) Income before income taxes 2,408 10,237 611 (7,163 ) 6,093 Income tax (expense) benefit 2,504 (4,196 ) 847 — (845 ) Net income 4,912 6,041 1,458 (7,163 ) 5,248 Less: Impact of noncontrolling interests, net of tax — — 336 — 336 Net income attributable to HomeAway, Inc. $ 4,912 $ 6,041 $ 1,122 $ (7,163 ) $ 4,912 Comprehensive income loss attributable to HomeAway, Inc. $ 4,421 $ 6,041 $ (12,808 ) $ (7,163 ) $ (9,509 ) Condensed Consolidating Statement of Operations Nine months ended September 30, 2015 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 177,996 $ 128,445 $ (5,160 ) $ 301,281 Other — 70,278 6,356 (2,362 ) 74,272 Total revenue — 248,274 134,801 (7,522 ) 375,553 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 120 50,039 15,835 (7,522 ) 58,472 Product development 87 56,508 8,640 — 65,235 Sales and marketing 485 67,498 75,867 — 143,850 General and administrative 3,210 52,476 16,429 — 72,115 Amortization expense 188 3,980 4,545 — 8,713 Intercompany (income) expense, net — (14,905 ) 14,905 — — Operating income (loss) (4,090 ) 32,678 (1,420 ) — 27,168 Other income (expense): Equity in earnings of consolidated subsidiaries 14,994 — — (14,994 ) — Interest expense (13,971 ) — (802 ) 802 (13,971 ) Interest income 2,567 244 417 (802 ) 2,426 Other expense, net 785 (182 ) (1,236 ) — (633 ) Total other income (expense), net 4,375 62 (1,621 ) (14,994 ) (12,178 ) Income before income taxes 285 32,740 (3,041 ) (14,994 ) 14,990 Income tax (expense) benefit 5,657 (12,808 ) (2,606 ) — (9,757 ) Net income (loss) 5,942 19,932 (5,647 ) (14,994 ) 5,233 Less: Impact of noncontrolling interests, net of tax — — (709 ) — (709 ) Net income attributable to HomeAway, Inc. $ 5,942 $ 19,932 $ (4,938 ) $ (14,994 ) $ 5,942 Comprehensive income (loss) attributable to HomeAway, Inc. $ 6,593 $ 19,932 $ (37,230 ) $ (14,994 ) $ (25,699 ) Condensed Consolidating Statement of Operations Nine months ended September 30, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 143,882 $ 138,365 $ (3,788 ) $ 278,459 Other — 56,098 5,466 (2,973 ) 58,591 Total revenue — 199,980 143,831 (6,761 ) 337,050 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 191 40,560 16,301 (6,761 ) 50,291 Product development 348 48,060 8,544 — 56,952 Sales and marketing 1,237 50,430 65,584 — 117,251 General and administrative 2,300 50,645 16,522 — 69,467 Amortization expense 188 4,038 5,937 — 10,163 Intercompany (income) expense, net — (18,064 ) 18,064 — — Operating income (loss) (4,264 ) 24,311 12,879 — 32,926 Other income (expense): Equity in earnings of consolidated subsidiaries 17,831 — — (17,831 ) — Interest expense (8,800 ) — (804 ) 762 (8,842 ) Interest income 1,342 143 394 (762 ) 1,117 Other expense, net (46 ) (145 ) (6,261 ) — (6,452 ) Total other income (expense), net 10,327 (2 ) (6,671 ) (17,831 ) (14,177 ) Income before income taxes 6,063 24,309 6,208 (17,831 ) 18,749 Income tax (expense) benefit 7,159 (10,833 ) (2,235 ) — (5,909 ) Net income 13,222 13,476 3,973 (17,831 ) 12,840 Less: Impact of noncontrolling interests, net of tax — — (382 ) — (382 ) Net income attributable to HomeAway, Inc. $ 13,222 $ 13,476 $ 4,355 $ (17,831 ) $ 13,222 Comprehensive income (loss) attributable to HomeAway, Inc. $ 12,580 $ 13,476 $ (1,228 ) $ (17,831 ) $ 6,997	Condensed Consolidating Statement of Operations Fiscal year ended December 31, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Eliminations Consolidated Revenue: Listing $ — $ 195,882 $ 181,241 $ (5,184 ) $ 371,939 Other — 71,664 6,545 (3,386 ) 74,823 Total revenue — 267,546 187,786 (8,570 ) 446,762 Costs and expenses: Cost of revenue (exclusive of amortization shown separately below) 230 53,983 21,969 (8,570 ) 67,612 Product development 391 65,087 11,604 — 77,082 Sales and marketing 1,483 66,628 86,884 — 154,995 General and administrative 3,220 68,039 21,872 — 93,131 Amortization expense 251 5,381 8,284 — 13,916 Intercompany (income) expense, net — (19,105 ) 19,105 — — Operating income (5,575 ) 27,533 18,068 — 40,026 Other income (expense): Equity in earnings of consolidated subsidiaries 23,176 — — (23,176 ) — Interest expense (13,290 ) — (1,108 ) 1,065 (13,333 ) Interest income 2,026 227 540 (1,065 ) 1,728 Other expense, net (234 ) (166 ) (6,782 ) — (7,182 ) Total other income (expense), net 11,678 61 (7,350 ) (23,176 ) (18,787 ) Income before income taxes 6,103 27,594 10,718 (23,176 ) 21,239 Income tax (expense) benefit 7,281 (12,476 ) (2,077 ) — (7,272 ) Net income 13,384 15,118 8,641 (23,176 ) 13,967 Less: Impact of noncontrolling interests, net of tax — — 583 — 583 Net income attributable to HomeAway, Inc. $ 13,384 $ 15,118 $ 8,058 $ (23,176 ) $ 13,384 Comprehensive income (loss) attributable to HomeAway, Inc. $ 12,017 $ 15,118 $ (9,496 ) $ (23,176 ) $ (5,537 )
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows Nine months ended September 30, 2015 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Total Cash flows from operating activities Net cash provided by (used in) operating activities $ (8,137 ) $ 92,525 $ 34,706 $ 119,094 Cash flows from investing activities Change in restricted cash — — 122 122 Purchases of intangibles and other assets — (278 ) — (278 ) Purchases and sales of non-marketable investments (1,866 ) — (2,000 ) (3,866 ) Purchases of short-term investments (379,387 ) — — (379,387 ) Proceeds from maturities and redemptions of marketable securities 272,022 — — 272,022 Proceeds from sales of marketable securities 1,525 — — 1,525 Net settlement of foreign currency forwards 11,459 — 3,622 15,081 Purchases of property and equipment (5,188 ) (15,322 ) (3,282 ) (23,792 ) Net cash provided by (used in) investing activities (101,435 ) (15,600 ) (1,538 ) (118,573 ) Cash flows from financing activities Proceeds from exercise of options to purchase common stock 9,640 — — 9,640 Excess tax benefit from stock-based compensation 8,161 — — 8,161 Intercompany transfers 77,878 (80,159 ) 2,281 — Net cash provided by (used in) financing activities 95,679 (80,159 ) 2,281 17,801 Effect of exchange rate changes on cash and cash equivalents — (96 ) (9,258 ) (9,354 ) Net increase (decrease) in cash and cash equivalents (13,893 ) (3,330 ) 26,191 8,968 Cash and cash equivalents at beginning of period 174,337 19,977 98,011 292,325 Cash and cash equivalents at end of period $ 160,444 $ 16,647 $ 124,202 $ 301,293 Condensed Consolidating Statement of Cash Flows Nine months ended September 30, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Total Cash flows from operating activities Net cash provided by (used in) operating activities $ 12,047 $ 77,820 $ 21,548 $ 111,415 Cash flows from investing activities Acquisition of businesses, net of cash acquired — (17,847 ) — (17,847 ) Change in restricted cash — — 166 166 Purchases of intangibles and other assets — (303 ) — (303 ) Purchases and sales of non-marketable investments (10,135 ) — — (10,135 ) Purchases of short-term investments (473,331 ) — — (473,331 ) Proceeds from maturities and redemptions of marketable securities 23,048 — — 23,048 Proceeds from sales of marketable securities 4,358 — — 4,358 Net settlement of foreign currency forwards (113 ) — (11,898 ) (12,011 ) Purchases of property and equipment (276 ) (19,486 ) (694 ) (20,456 ) Net cash used in investing activities (456,449 ) (37,636 ) (12,426 ) (506,511 ) Cash flows from financing activities Proceeds from borrowings on convertible senior notes, net 390,978 — — 390,978 Proceeds from issuance of warrants 38,278 — — 38,278 Purchase of convertible note hedge (85,853 ) — — (85,853 ) Other financing activities (919 ) — — (919 ) Proceeds from exercise of options to purchase common stock 22,827 — — 22,827 Excess tax benefit from stock-based compensation 2,583 — — 2,583 Intercompany tranfers 34,000 (37,500 ) 3,500 — Net cash provided by (used in) financing activities 401,894 (37,500 ) 3,500 367,894 Effect of exchange rate changes on cash and cash equivalents — (16 ) (5,287 ) (5,303 ) Net increase (decrease) in cash and cash equivalents (42,508 ) 2,668 7,335 (32,505 ) Cash and cash equivalents at beginning of period 213,213 22,613 88,782 324,608 Cash and cash equivalents at end of period $ 170,705 $ 25,281 $ 96,117 $ 292,103	Condensed Consolidating Statement of Cash Flows Year Ended December 31, 2014 (In thousands) Guarantor Non-Guarantor Parent Subsidiaries Subsidiaries Total Cash flows from operating activities Net cash provided by operating activities $ 21,249 $ 99,158 $ 24,957 $ 145,364 Cash flows from investing activities Acquisition of businesses, net of cash acquired — (17,847 ) — (17,847 ) Change in restricted cash — — (501 ) (501 ) Purchases of intangibles and other assets — (473 ) — (473 ) Purchases and sales of non-marketable investments (25,148 ) — — (25,148 ) Purchases of short-term investments (575,606 ) — — (575,606 ) Proceeds from maturities and redemptions of marketable securities 109,516 — — 109,516 Proceeds from sales of marketable securities 4,358 — — 4,358 Net settlement of foreign currency forwards 1,424 — (1,752 ) (328 ) Purchases of property and equipment (5,498 ) (24,931 ) (1,218 ) (31,647 ) Net cash used in investing activities (490,954 ) (43,251 ) (3,471 ) (537,676 ) Cash flows from financing activities Repurchase of redeemable noncontrolling interest — — (1,461 ) (1,461 ) Proceeds from borrowings on convertible senior notes, net 390,978 — — 390,978 Proceeds from issuance of warrants 38,278 — — 38,278 Purchase of convertible note hedge (85,853 ) — — (85,853 ) Other financing activities (919 ) — — (919 ) Proceeds from exercise of options to purchase common stock 25,386 — — 25,386 Excess tax benefit from stock-based compensation 3,092 — — 3,092 Intercompany transfers 59,867 (58,500 ) (1,367 ) — Net cash provided by (used in) financing activities 430,829 (58,500 ) (2,828 ) 369,501 Effect of exchange rate changes on cash and cash equivalents — (43 ) (9,429 ) (9,472 ) Net increase (decrease) in cash and cash equivalents (38,876 ) (2,636 ) 9,229 (32,283 ) Cash and cash equivalents at beginning of period 213,213 22,613 88,782 324,608 Cash and cash equivalents at end of period $ 174,337 $ 19,977 $ 98,011 $ 292,325

Summary of Significant Accoun44

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2015USD ($)	Sep. 30, 2015USD ($)Segment	Dec. 31, 2014USD ($)Segment	Dec. 31, 2013USD ($)	Dec. 31, 2012USD ($)	Sep. 30, 2014USD ($)
Significant Accounting Policies [Line Items]
Number of operating segment | Segment		1	1
Available for sales securities, premium	$ 9,240,000	$ 9,240,000	$ 13,187,000	$ 8,065,000		$ 11,239,000
Total carrying value of company investments			19,498,000
Capitalized certain internally developed software	$ 38,759,000	$ 38,759,000	36,038,000	30,523,000
Advertising expenses			$ 59,978,000	39,138,000	$ 37,559,000
Recognized income tax positions, percentage	50.00%	50.00%	50.00%
Derivatives amount	$ 157,735,000	$ 157,735,000	$ 165,454,000
Amount of unsettled derivative instruments			0	0
Decrease in other comprehensive income	(96,000)	4,149,000
Money market funds [Member]
Significant Accounting Policies [Line Items]
Restricted cash	2,200,000	$ 2,200,000	$ 2,492,000	$ 2,180,000
Breakage Revenue [Member]
Significant Accounting Policies [Line Items]
Revenue recognition period		48 months	48 months
Commission Revenue [Member]
Significant Accounting Policies [Line Items]
Revenue recognition period		48 months	48 months
China [Member]
Significant Accounting Policies [Line Items]
Carrying value of non-marketable cost investment			$ 9,385,000
Total carrying value of company investments	19,498,000	$ 19,498,000
United States [Member]
Significant Accounting Policies [Line Items]
Carrying value of non-marketable cost investment	15,000,000	15,000,000	$ 15,000,000
Canada [Member]
Significant Accounting Policies [Line Items]
Carrying value of non-marketable cost investment	2,799,000	2,799,000
Turkey [Member]
Significant Accounting Policies [Line Items]
Carrying value of non-marketable cost investment	$ 2,000,000	2,000,000
Adjustments to Prior Period Errors [Member]
Significant Accounting Policies [Line Items]
Increase in liabilities		4,200,000
Decrease in other comprehensive income		4,000,000
Decrease in profit before tax		$ 200,000
Equipment, computer hardware and purchased computer software [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment useful life		3 years	3 years
Furniture and fixtures [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment useful life		5 years	5 years
Furniture and fixtures [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment useful life		10 years	10 years
Leasehold Improvements [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment useful life description		Shorter of the contractual lease period or estimated useful life.	Shorter of the contractual lease period or their useful life.
Internally Developed Software and Website Development Costs [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment useful life		5 years	5 years

Summary of Significant Accoun45

Summary of Significant Accounting Policies - Fair Value of Financial Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	$ 618,343	$ 520,844	$ 66,798
Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	2,200	2,492	2,180
Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	39,529	21,726	2,054
Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	187,303	140,406	31,487
Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	346,782	353,212	33,257
International government bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	21,390	1,501
U.S. government agency bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	23,339
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	151,691	184,009	26,451
Restricted cash	1,983	2,058	758
Short-term investments	618,343	520,844	66,798
Total financial assets	772,017	706,911	94,007
Fair Value, Measurements, Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	151,691	183,008	26,451
Restricted cash			758
Fair Value, Measurements, Recurring [Member] | Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	1,983	2,058
Short-term investments	39,529	21,726	2,054
Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		1,001
Short-term investments	187,303	140,406	31,487
Fair Value, Measurements, Recurring [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	346,782	353,212	33,257
Fair Value, Measurements, Recurring [Member] | International government bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	21,390	1,501
Fair Value, Measurements, Recurring [Member] | Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments		3,999
Fair Value, Measurements, Recurring [Member] | U.S. government agency bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	23,339
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	151,691	183,008	26,451
Restricted cash			758
Total financial assets	151,691	183,008	27,209
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	151,691	183,008	26,451
Restricted cash			758
(Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		1,001
Restricted cash	1,983	2,058
Short-term investments	618,343	520,844	66,798
Total financial assets	620,326	523,903	66,798
(Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	1,983	2,058
Short-term investments	39,529	21,726	2,054
(Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		1,001
Short-term investments	187,303	140,406	31,487
(Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	346,782	353,212	$ 33,257
(Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | International government bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	21,390	1,501
(Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments		$ 3,999
(Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | U.S. government agency bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	$ 23,339

Summary of Significant Accoun46

Summary of Significant Accounting Policies - Schedule of Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 301,293	$ 292,325	$ 292,103	$ 324,608	$ 189,478	$ 118,208
Demand Deposits [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	149,602	108,316		298,157
Money market funds [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 151,691	183,008		$ 26,451
Municipal bonds [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents		$ 1,001

Summary of Significant Accoun47

Summary of Significant Accounting Policies - Short-Term Investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Gross Cost	$ 618,525	$ 521,641	$ 66,815
Gross Unrealized Gains	227	52	49
Gross Unrealized Losses	(409)	(849)	(66)
Short-term Investments, fair value	618,343	520,844	66,798
Time Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Cost	39,529	21,726	2,055
Gross Unrealized Losses			(1)
Short-term Investments, fair value	39,529	21,726	2,054
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Cost		3,999
Short-term Investments, fair value		3,999
U.S. government agency bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Cost	23,375
Gross Unrealized Gains	3
Gross Unrealized Losses	(39)
Short-term Investments, fair value	23,339
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Cost	346,949	353,957	33,274
Gross Unrealized Gains	141	7	33
Gross Unrealized Losses	(308)	(752)	(50)
Short-term Investments, fair value	346,782	353,212	33,257
International government bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Cost	21,418	1,504
Gross Unrealized Losses	(28)	(3)
Short-term Investments, fair value	21,390	1,501
Municipal bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Cost	187,254	140,455	31,486
Gross Unrealized Gains	83	45	16
Gross Unrealized Losses	(34)	(94)	(15)
Short-term Investments, fair value	$ 187,303	$ 140,406	$ 31,487

Summary of Significant Accoun48

Summary of Significant Accounting Policies - Summary of Contractual Underlying Maturities of Short-Term Investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Short-term Investments, Less than 1 Year	$ 375,946	$ 355,164	$ 14,695
Short-term Investments, 1 to 3 Years	242,397	165,680	52,103
Short-term Investments, fair value	618,343	520,844	66,798
Time Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term Investments, Less than 1 Year	25,951	21,479	500
Short-term Investments, 1 to 3 Years	13,578	247	1,554
Short-term Investments, fair value	39,529	21,726	2,054
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term Investments, Less than 1 Year		3,999
Short-term Investments, fair value		3,999
U.S. government agency bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term Investments, Less than 1 Year	597
Short-term Investments, 1 to 3 Years	22,742
Short-term Investments, fair value	23,339
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term Investments, Less than 1 Year	203,039	240,570	11,164
Short-term Investments, 1 to 3 Years	143,743	112,642	22,093
Short-term Investments, fair value	346,782	353,212	33,257
International government bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term Investments, Less than 1 Year	15,192	1,501
Short-term Investments, 1 to 3 Years	6,198
Short-term Investments, fair value	21,390	1,501
Municipal bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term Investments, Less than 1 Year	131,167	87,615	3,031
Short-term Investments, 1 to 3 Years	56,136	52,791	28,456
Short-term Investments, fair value	$ 187,303	$ 140,406	$ 31,487

Summary of Significant Accoun49

Summary of Significant Accounting Policies - Summary of Depreciation Expenses on Internally Developed Software and Website Development Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Depreciation and Other Amortization Expenses [Line Items]
Depreciation expense on internally developed software and website development costs			$ 16,204	$ 12,091	$ 16,926	$ 13,399	$ 11,051
Internally Developed Software and Website Development Costs [Member]
Depreciation and Other Amortization Expenses [Line Items]
Depreciation expense on internally developed software and website development costs	$ 1,677	$ 1,343	$ 4,867	$ 3,947	$ 5,471	$ 3,939	$ 2,874

Summary of Significant Accoun50

Summary of Significant Accounting Policies - Summary of Excess Tax Benefit (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Excess tax benefit from stock-based compensation, net	$ 5,200	$ 1,362	$ 7,494	$ 2,583	$ 2,743	$ 8,226	$ 7,122

Summary of Significant Accoun51

Summary of Significant Accounting Policies - Summary of Foreign Exchange Loss (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Foreign exchange loss	$ 279	$ 1,432	$ 930	$ 6,421	$ 7,138	$ 5,964	$ 2,618

Summary of Significant Accoun52

Summary of Significant Accounting Policies - Schedule of Fair Value and Notional Amounts of Outstanding or Unsettled Derivative Instruments (Detail) - USD ($)	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Notional Amount	$ 157,735,000	$ 165,454,000
Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	170,604,000	168,726,000	$ 104,812,000
Not Designated as Hedging Instruments [Member] | Accrued expenses [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	129,303,000	11,562,000	84,292,000
Not Designated as Hedging Instruments [Member] | Prepaid expense and other current assets [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	41,301,000	157,164,000	20,520,000
Not Designated as Hedging Instruments [Member] | (Level 2) [Member]
Derivatives, Fair Value [Line Items]
Gross Amount of Recognized Assets/Liabilities	517,000	4,439,000	(616,000)
Gross Amounts Offset in the Balance Sheet	0	0	0
Net Amount Presented in the Balance Sheet	517,000	4,439,000	(616,000)
Not Designated as Hedging Instruments [Member] | (Level 2) [Member] | Accrued expenses [Member]
Derivatives, Fair Value [Line Items]
Gross Amount of Recognized Assets/Liabilities	(656,000)	(67,000)	(979,000)
Gross Amounts Offset in the Balance Sheet	0	0	0
Net Amount Presented in the Balance Sheet	(656,000)	(67,000)	(979,000)
Not Designated as Hedging Instruments [Member] | (Level 2) [Member] | Prepaid expense and other current assets [Member]
Derivatives, Fair Value [Line Items]
Gross Amount of Recognized Assets/Liabilities	1,173,000	4,506,000	363,000
Gross Amounts Offset in the Balance Sheet	0	0	0
Net Amount Presented in the Balance Sheet	$ 1,173,000	$ 4,506,000	$ 363,000

Business Combinations - Fair Va

Business Combinations - Fair Value of Acquisition Amounts at Acquisition Date (Detail) - USD ($) $ in Thousands	1 Months Ended			9 Months Ended	12 Months Ended
	Nov. 30, 2014	Dec. 31, 2013	Aug. 31, 2013	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2015	Mar. 31, 2014	Nov. 30, 2013
Net tangible assets (liabilities) acquired
Goodwill		$ 507,611			$ 493,671	$ 507,611	$ 312,412	$ 460,049
Redeemable noncontrolling interests		(10,966)				(10,966)
Net purchase price				$ 17,847	17,847	205,470	16,207
Glad to Have You Inc [Member]
Net tangible assets (liabilities) acquired
Cash					25
Deferred revenue					(65)
Other					17
Total tangible assets (liabilities) acquired					(23)
Deferred tax liabilities					(1,653)				$ (1,653)
Goodwill					11,647
Aggregate purchase price					16,791
Less: cash acquired					(25)
Net purchase price					16,766
Glad to Have You Inc [Member] | Developed technology [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets					3,760
Glad to Have You Inc [Member] | Customer relationships [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets					1,643
Glad to Have You Inc [Member] | Non-competition agreements [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets					240
Glad to Have You Inc [Member] | Trade names [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets					1,177
Stayz [Member]
Net tangible assets (liabilities) acquired
Cash						4,942
Deferred revenue		(2,234)				(2,234)
Amounts payable to property owners		(4,187)				(4,187)
Other		(365)				(365)
Total tangible assets (liabilities) acquired		(1,844)				(1,844)
Deferred tax liabilities		(5,313)				(5,313)
Goodwill		177,777			$ 178,288	177,777		$ 178,288
Aggregate purchase price						197,254
Less: cash acquired						(4,942)
Net purchase price		197,820				192,312
Stayz [Member] | Developed technology [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		1,735				1,735
Stayz [Member] | Customer relationships [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		18,288				18,288
Stayz [Member] | Non-competition agreements [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		1,387				1,387
Stayz [Member] | Trade names [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		5,224				5,224
Bookabach [Member]
Net tangible assets (liabilities) acquired
Cash						395
Deferred revenue		(350)				(350)
Amounts payable to property owners		(194)				(194)
Other		228				228
Total tangible assets (liabilities) acquired		79				79
Deferred tax liabilities		(228)				(228)				$ (228)
Goodwill		3,514				3,514
Redeemable noncontrolling interests		(1,938)				(1,938)
Aggregate purchase price	$ 1,461					2,398
Less: cash acquired						(395)
Net purchase price						2,003
Bookabach [Member] | Developed technology [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		64				64
Bookabach [Member] | Customer relationships [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		446				446
Bookabach [Member] | Non-competition agreements [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		300				300
Bookabach [Member] | Trade names [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		161				161
Travelmob [Member]
Net tangible assets (liabilities) acquired
Cash						63
Deferred revenue		(43)				(43)
Amounts payable to property owners		(473)				(473)
Other		(123)				(123)
Total tangible assets (liabilities) acquired		(576)				(576)
Deferred tax liabilities		(513)	$ (513)			(513)
Goodwill		16,833				16,833
Redeemable noncontrolling interests		(9,028)				(9,028)
Aggregate purchase price						11,533
Less: cash acquired						(63)
Net purchase price			$ 20,000			11,470
Travelmob [Member] | Developed technology [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		2,937				2,937
Travelmob [Member] | Customer relationships [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		1,123				1,123
Travelmob [Member] | Non-competition agreements [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		150				150
Travelmob [Member] | Trade names [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets		$ 607				$ 607
Toprural [Member]
Net tangible assets (liabilities) acquired
Cash							3,220
Deferred revenue							(2,269)
Other							(315)
Total tangible assets (liabilities) acquired							636
Deferred tax liabilities							(3,193)
Goodwill							11,190
Aggregate purchase price							19,277
Less: cash acquired							(3,220)
Net purchase price							16,057
Toprural [Member] | Developed technology [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets							2,144
Toprural [Member] | Customer relationships [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets							7,440
Toprural [Member] | Trade names [Member]
Net tangible assets (liabilities) acquired
Amortizable intangible assets							$ 1,060

Business Combinations - Weighte

Business Combinations - Weighted-Average Amortization Period in Total and by Major Definite-Lived Intangible Asset Class and Acquisition (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Glad to Have You Inc [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period	6 years 6 months
Glad to Have You Inc [Member] | Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period	10 years
Glad to Have You Inc [Member] | Non-competition agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period	3 years
Glad to Have You Inc [Member] | Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period	8 years
Glad to Have You Inc [Member] | Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period	5 years
Stayz [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		9 years 9 months 18 days
Stayz [Member] | Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		10 years
Stayz [Member] | Non-competition agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		3 years
Stayz [Member] | Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		11 years
Stayz [Member] | Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		2 years
Bookabach [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		7 years 9 months 18 days
Bookabach [Member] | Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		10 years
Bookabach [Member] | Non-competition agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		3 years
Bookabach [Member] | Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		11 years
Bookabach [Member] | Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		1 year 9 months 18 days
Travelmob [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		8 years 8 months 12 days
Travelmob [Member] | Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		10 years
Travelmob [Member] | Non-competition agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		3 years
Travelmob [Member] | Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		13 years
Travelmob [Member] | Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period		7 years
Toprural [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period			7 years 4 months 24 days
Toprural [Member] | Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period			10 years
Toprural [Member] | Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period			8 years
Toprural [Member] | Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, weighted-average amortization period			4 years

Business Combinations - Additio

Business Combinations - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
Minimum [Member]
Business Acquisition [Line Items]
Identifiable intangible assets, estimated useful lives	2 years
Maximum [Member]
Business Acquisition [Line Items]
Identifiable intangible assets, estimated useful lives	13 years

Business Combinations - Glad to

Business Combinations - Glad to Have You, Inc. - Additional Information (Detail) - Glad to Have You Inc [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2014USD ($)
Business Acquisition [Line Items]
Business acquisition aggregate purchase price	$ 16,791
Seller obligations release description	Two business days following the first anniversary date of the acquisition.
Business acquisition, cash consideration purchase price deposited in escrow	$ 250
Business acquisition, cash consideration deposited in escrow and pending purchase price adjustments	$ 250
Finite-lived intangible asset, weighted-average amortization period	6 years 6 months
Trade names [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, weighted-average amortization period	10 years
Developed technology [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, weighted-average amortization period	5 years
Customer relationships [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, weighted-average amortization period	8 years
Non-competition agreements [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, weighted-average amortization period	3 years

Business Combinations - Stayz -

Business Combinations - Stayz - Additional Information (Detail) $ in Thousands	1 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2013USD ($)Property	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2012USD ($)	Apr. 30, 2014USD ($)
Business Acquisition [Line Items]
Payment made to acquire business, net of cash acquired		$ 17,847	$ 17,847	$ 205,470	$ 16,207
Stayz [Member]
Business Acquisition [Line Items]
Percentage of ownership interest	100.00%			100.00%
Payment made to acquire business, net of cash acquired	$ 197,820			$ 192,312
Business acquisition transaction costs	$ 3,802			3,802
Business acquisition aggregate purchase price						$ 196,739
Business acquisition amount paid to sellers						$ 1,081
Number of rental properties | Property	40,000
Decrease in proforma revenue based on adjustments				(1,900)
Decrease in proforma net income based on adjustments				$ (1,300)

Business Combinations - Pro For

Business Combinations - Pro Forma Results (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Stayz [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Pro forma total revenue	$ 370,620	$ 305,904
Pro forma net income	$ 28,687	17,855
Toprural [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Pro forma total revenue		281,858
Pro forma net income		$ 14,959

Business Combinations - Bookaba

Business Combinations - Bookabach - Additional Information (Detail) - Bookabach [Member]	1 Months Ended		12 Months Ended
	Nov. 30, 2014USD ($)	Nov. 30, 2013USD ($)LeasesInstallment	Dec. 31, 2014	Dec. 31, 2013USD ($)
Business Acquisition [Line Items]
Percentage of ownership interest		55.00%	75.00%	55.00%
Business acquisition aggregate purchase price		$ 2,398,000
Business acquisition transaction costs		160,000
Business acquisition, cash consideration purchase price deposited in escrow		$ 492,000
Number of rental properties | Leases		8,000
Cash consideration	$ 1,461,000			$ 2,398,000
Percentage of ownership interest including subsequent acquisition	75.00%
Call Option [Member]
Business Acquisition [Line Items]
Number of installments to purchase remaining non controlling interest | Installment		2
Call Option [Member] | Maximum [Member]
Business Acquisition [Line Items]
Option agreement date			Jun. 30, 2015
Call Option [Member] | Minimum [Member]
Business Acquisition [Line Items]
Option agreement date			Oct. 31, 2014
Put Option [Member]
Business Acquisition [Line Items]
Number of installments to repurchase remaining non controlling interest | Installment		2
Put Option [Member] | Maximum [Member]
Business Acquisition [Line Items]
Option agreement date			Jun. 30, 2015
Put Option [Member] | Minimum [Member]
Business Acquisition [Line Items]
Option agreement date			Oct. 31, 2014

Business Combinations - Travelm

Business Combinations - Travelmob - Additional Information (Detail)	1 Months Ended	9 Months Ended	12 Months Ended
	Aug. 31, 2013USD ($)Leases	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2012USD ($)
Business Acquisition [Line Items]
Payment made to acquire business, net of cash acquired		$ 17,847,000	$ 17,847,000	$ 205,470,000	$ 16,207,000
Travelmob [Member]
Business Acquisition [Line Items]
Percentage of ownership interest	100.00%			68.50%
Payment made to acquire business, net of cash acquired	$ 20,000,000			$ 11,470,000
Non-controlling interest sold	8,500,000
Business acquisition transaction cost	$ 284,000
Number of rental properties | Leases	14,000
Cash investment	$ 7,000,000
Percentage of interest in outstanding stock	68.50%
Non controlling interest	$ 13,000,000		$ 9,600,000
Non controlling interest ownership percentage	31.50%
Travelmob [Member] | Maximum [Member] | Call Option [Member]
Business Acquisition [Line Items]
Option agreement date			Dec. 31, 2016
Travelmob [Member] | Maximum [Member] | Put Option [Member]
Business Acquisition [Line Items]
Option agreement date			Feb. 1, 2017

Business Combinations - Toprura

Business Combinations - Toprural - Additional Information (Detail) - Toprural [Member]	Apr. 30, 2012USD ($)
Business Acquisition [Line Items]
Percentage of ownership interest	100.00%
Business acquisition aggregate purchase price	$ 19,277,000
Business acquisition, transaction costs	285,000
Business acquisition, cash consideration purchase price deposited in escrow	$ 2,670,000

Goodwill and Other Intangible62

Goodwill and Other Intangible Assets - Changes in Goodwill Balance (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	$ 493,671	$ 507,611	$ 312,412
Acquired in business combinations		11,647	198,124
Foreign currency translation adjustment	(33,622)	(26,098)	(2,925)
Post-acquisition goodwill adjustment for Stayz		511
Ending balance	$ 460,049	$ 493,671	$ 507,611

Goodwill and Other Intangible63

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill	$ 460,049	$ 493,671	$ 507,611	$ 312,412
Stayz [Member]
Goodwill [Line Items]
Increase in goodwill	511	511
Goodwill	$ 178,288	$ 178,288	$ 177,777

Goodwill and Other Intangible64

Goodwill and Other Intangible Assets - Summary of Finite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 104,200	$ 111,489	$ 147,252
Accumulated Amortization	(53,226)	(48,062)	(73,616)
Net Carrying Amount	$ 50,974	$ 63,427	73,636
Trade names and trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	10 years	10 years
Gross Carrying Amount	$ 28,525	$ 30,316	30,066
Accumulated Amortization	(9,572)	(8,396)	(5,050)
Net Carrying Amount	18,953	21,920	25,016
Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	20,290	21,293	31,513
Accumulated Amortization	(14,748)	(13,231)	(23,646)
Net Carrying Amount	5,542	8,062	7,867
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	53,436	57,656	80,510
Accumulated Amortization	(27,650)	(25,512)	(41,739)
Net Carrying Amount	25,786	32,144	38,771
Noncompete agreements and domain names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,949	2,224	5,163
Accumulated Amortization	(1,256)	(923)	(3,181)
Net Carrying Amount	$ 693	$ 1,301	$ 1,982
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life		2 years
Minimum [Member] | Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	2 years	2 years
Minimum [Member] | Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	6 years	6 years
Minimum [Member] | Noncompete agreements and domain names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	2 years	2 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life		13 years
Maximum [Member] | Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	8 years	8 years
Maximum [Member] | Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	14 years	14 years
Maximum [Member] | Noncompete agreements and domain names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	5 years	5 years

Goodwill and Other Intangible65

Goodwill and Other Intangible Assets - Summary of Amortization Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 2,819	$ 3,397	$ 8,713	$ 10,163	$ 13,916	$ 11,668	$ 12,438

Goodwill and Other Intangible66

Goodwill and Other Intangible Assets - Expected Future Annual Amortization Expense for Finite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
2,015		$ 11,772
2,016		9,132
2,017		8,042
2,018		7,738
2,019		7,057
Thereafter		19,686
Net Carrying Amount	$ 50,974	$ 63,427	$ 73,636

Goodwill and Other Intangible67

Goodwill and Other Intangible Assets - Indefinite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Indefinite-lived Intangible Assets [Line Items]
Trade names		$ 7,029	$ 7,029
Trade names [Member]
Indefinite-lived Intangible Assets [Line Items]
Trade names	$ 7,029	$ 7,029

Property and Equipment, net - P

Property and Equipment, net - Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Computer equipment and purchased software		$ 31,566	$ 24,074
Internal-use software and website development costs		36,038	30,523
Furniture and fixtures		7,915	5,999
Leasehold improvements		20,922	13,999
Property plant and equipment, gross		96,441	74,595
Less accumulated depreciation		(40,268)	(34,788)
Property plant and equipment, net	$ 60,773	$ 56,173	$ 39,807

Property and Equipment, net - S

Property and Equipment, net - Schedule of Depreciation Expense (Detail) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 16,204	$ 12,091	$ 16,926	$ 13,399	$ 11,051

Accrued Expenses - Accrued Expe

Accrued Expenses - Accrued Expenses (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Payables and Accruals [Abstract]
Compensation and related benefits	$ 19,591	$ 21,413	$ 21,700
Gift cards	4,103	5,654	6,090
Contracting, consulting and professional fees	3,111	3,254	4,494
Taxes	6,810	4,954	3,425
Marketing	5,131	4,115	3,197
Foreign exchange-forward contracts	683	99	979
Traveler guarantee	1,246	1,790	956	$ 566
Other	9,771	8,976	13,784
Total	$ 50,446	$ 50,255	$ 54,625

Convertible Senior Notes - Summ

Convertible Senior Notes - Summary of Convertible Senior Notes (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Carrying Value of Convertible Senior Notes	$ 329,905	$ 316,181
Convertible Senior Notes 0.125% due April 1, 2019 [Member]
Debt Instrument [Line Items]
Par Value	402,500	402,500	$ 402,500
Equity Component Recorded at Issuance	90,887	90,887
Carrying Value of Convertible Senior Notes	$ 329,905	$ 316,181

Convertible Senior Notes - Su72

Convertible Senior Notes - Summary of Convertible Senior Notes (Parenthetical) (Detail) - Convertible Senior Notes 0.125% due April 1, 2019 [Member]	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Mar. 31, 2014
Debt Instrument [Line Items]
Senior notes, Interest rate	0.125%	0.125%	0.125%
Senior notes, Maturity date	Apr. 1, 2019	Apr. 1, 2019

Convertible Senior Notes - Addi

Convertible Senior Notes - Additional Information (Detail)	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2014USD ($)	Sep. 30, 2015USD ($)$ / shares	Dec. 31, 2014USD ($)TradingDay$ / shares	Dec. 31, 2013USD ($)
Debt Instrument [Line Items]
Deferred tax liability			$ 51,144,000	$ 42,446,000
Closing price of common stock | $ / shares		$ 26.54	$ 29.78
Warrants price per unit | $ / shares		$ 81.14	$ 81.14
Term issuance of warrants		5 years	5 years
Convertible Senior Notes 0.125% due April 1, 2019 [Member]
Debt Instrument [Line Items]
Interest rate	0.125%	0.125%	0.125%
Debt par value	$ 402,500,000	$ 402,500,000	$ 402,500,000
Semi-annual first interest is payable	--04-01
Semi-annual second interest is payable	--10-01
Interest is payable start date	Oct. 1, 2014
Debt conversion description		During any calendar quarter commencing after June 30, 2014, if, for at least 20 trading days during the 30 consecutive trading day period ending on the last trading day of the immediately preceding calendar quarter, the last reported sales price of the Company's common stock for such trading day is greater than or equal to 130% of the applicable conversion price for the Notes on each applicable trading day	During any calendar quarter commencing after June 30, 2014, if, for at least 20 trading days during the 30 consecutive trading day period ending on the last trading day of the immediately preceding calendar quarter, the last reported sales price of the Company's common stock for such trading day is greater than or equal to 130% of the applicable conversion price for the Notes on each applicable trading day
Debt instrument convertible threshold trading days		20	20
Common stock closing sales price percentage		130.00%	130.00%
Percentage of trading price for conversion of note		98.00%	98.00%
Consecutive trading period		5 days	5 days
Principal amount		$ 1,000	$ 1,000
Percentage of principal amount of notes		100.00%	100.00%
Convertible Senior Notes 0.125% due April 1, 2019 [Member] | (Level 2) [Member]
Debt Instrument [Line Items]
Total estimated fair value of the notes		$ 293,300,000	$ 304,300,000
0.125% Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Debt par value		402,500,000	402,500,000
Deferred tax liability		$ 800,000	$ 800,000

Convertible Senior Notes - Sche

Convertible Senior Notes - Schedule of Conversion of Senior Notes to Common Stock (Detail) - 0.125% Convertible Senior Notes [Member]	9 Months Ended	12 Months Ended
	Sep. 30, 2015$ / shares	Dec. 31, 2014$ / shares
Debt Instrument [Line Items]
Debt instrument conversion rate	19.1703	19.1703
Initial conversion price per share	$ 52.16	$ 52.16
Free Convertibility Date	Oct. 1, 2018	Oct. 1, 2018

Convertible Senior Notes - Sc75

Convertible Senior Notes - Schedule of Conversion of Senior Notes (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Net carrying amount	$ 329,905	$ 316,181
0.125% Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Principal: 0.125% Convertible Senior Notes	402,500	402,500
Less: debt discount, net 0.125% Convertible Senior Notes	(72,595)	(86,319)
Net carrying amount	$ 329,905	$ 316,181

Convertible Senior Notes - Su76

Convertible Senior Notes - Summary of Hedge Notes (Detail) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Note Hedges, Purchase		$ 85,853	$ 85,853
Note Hedges [Member]
Derivatives, Fair Value [Line Items]
Note Hedges, Contract Date	2014-03		2014-03
Note Hedges, Purchase	$ 85,853		$ 85,853
Underlying Note Hedges, Shares	7,716,049		7,716,049

Convertible Senior Notes - Comp

Convertible Senior Notes - Components of Warrants (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Class of Warrant or Right [Line Items]
Warrants, proceed amount		$ 38,278	$ 38,278
Warrants, shares	7,716,049		7,716,049
Warrants, strike price	$ 81.14		$ 81.14
Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants, proceed amount	$ 38,278		$ 38,278

Convertible Senior Notes - Sc78

Convertible Senior Notes - Schedule of Total Interest Expense Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Debt Disclosure [Abstract]
0.125% coupon	$ 126	$ 126	$ 378	$ 252	$ 378
Amortization of debt issuance costs	14	13	40	26	39
Amortization of debt discount	4,641	4,378	13,724	8,694	13,137
Total	$ 4,781	$ 4,517	$ 14,142	$ 8,972	$ 13,554

Commitments and Contingencies -

Commitments and Contingencies - Future Minimum Lease Payments under Noncancellable Operating Leases (Detail) $ in Thousands	Dec. 31, 2014USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,015	$ 8,073
2,016	8,487
2,017	8,324
2,018	7,486
2,019	6,601
Thereafter	21,870
Total minimum lease payments	$ 60,841

Commitments and Contingencies80

Commitments and Contingencies - Summary of Rental Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases [Abstract]
Rental expense	$ 1,733	$ 1,911	$ 5,754	$ 5,134	$ 6,994	$ 5,202	$ 4,492

Commitments and Contingencies81

Commitments and Contingencies - Additional Information (Detail)	Sep. 30, 2015USD ($)	Sep. 30, 2015GBP (£)	Dec. 31, 2014USD ($)	Dec. 31, 2014GBP (£)
Carefree Rental Guarantee [Member]
Commitments and Contingencies [Line Items]
Guarantee maximum exposure, percentage			100.00%	100.00%
Guarantee maximum exposure amount	$ 10,000		$ 10,000
Basic Rental Guarantee [Member]
Commitments and Contingencies [Line Items]
Guarantee maximum exposure amount	1,000		1,000
Subsidiary's Bank Credit, United Kingdom [Member] | United Kingdom [Member]
Commitments and Contingencies [Line Items]
Guarantee maximum exposure amount	$ 7,595,000	£ 5,000,000	$ 7,800,000	£ 5,000,000

Commitments and Contingencies82

Commitments and Contingencies - Changes for Traveler Guarantees (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Traveler guarantee liability, beginning balance	$ 1,790	$ 956	$ 566
Costs accrued for new and expected future claims	1,216	3,576	2,230
Guarantee obligations honored	(1,760)	(2,742)	(1,840)
Traveler guarantee liability, ending balance	$ 1,246	$ 1,790	$ 956

Stockholders' Equity and Stock-

Stockholders' Equity and Stock-Based Compensation - Additional Information (Detail)	Dec. 17, 2013USD ($)$ / sharesshares	Sep. 30, 2015USD ($)$ / sharesshares	Sep. 30, 2015USD ($)$ / sharesshares	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)CompensationPlan$ / sharesshares	Dec. 31, 2013USD ($)$ / sharesshares	Dec. 31, 2012USD ($)shares	Jul. 31, 2011$ / sharesshares
Stock-Based Compensation And Stockholders Equity [Line Items]
Common stock, shares authorized		350,000,000	350,000,000		350,000,000	350,000,000		350,000,000
Common stock, par value | $ / shares		$ 0.0001	$ 0.0001		$ 0.0001	$ 0.0001		$ 0.0001
Common stock, shares outstanding		96,162,374	96,162,374		94,515,344	92,361,069
Common stock issued	6,921,424	96,162,374	96,162,374		94,515,344	92,361,069
Stock issued during period par value per share | $ / shares	$ 37
Number stock sold by company	5,500,000
Number stock sold by existing stockholders | $ / shares	$ 1,421,424
Proceeds from underwritten public offering, net of underwriting discount and offering costs | $	$ 195,300,000
Number of stock-based compensation plans | CompensationPlan					2
Options outstanding					7,600,296,000	8,479,261,000	10,404,703,000
Cash received from option exercises under plans | $			$ 9,640,000	$ 22,827,000	$ 25,386,000	$ 48,473,000	$ 25,878,000
Excess tax (benefit) shortfall from stock-based compensation | $			7,494,000		2,743,000	8,226,000	7,122,000
Aggregate intrinsic value of stock options exercised | $					$ 39,140,000	$ 52,949,000	$ 40,394,000
Stock options vested					1,649,456
Weighted average grant date fair value | $ / shares					$ 12.05
Restricted stock awards vested					565,733	241,517
Restricted stock awards and units vested, Weighted average grant date fair value | $ / shares					$ 27.46
Unrecognized compensation cost related to nonvested stock options and restricted stock | $					$ 95,989,000	$ 84,248,000
Unrecognized compensation cost over a weighted average period					2 years 4 months 10 days
Maximum [Member]
Stock-Based Compensation And Stockholders Equity [Line Items]
Number of preferred shares that board of directors can designate and issue without action by stockholders					10,000,000
Underwriters [Member]
Stock-Based Compensation And Stockholders Equity [Line Items]
Number stock sold by existing stockholders | $ / shares	$ 902,794
Stock Incentive Plan 2011 [Member]
Stock-Based Compensation And Stockholders Equity [Line Items]
Options outstanding					4,124,581
Number of common stock reserved for issuance					20,932,095
Number of shares available for issuance annual incremental terms					In addition, the number of shares available for issuance under the 2011 Plan will be increased annually on the first day of the Company's fiscal year by an amount equal to the least of (a) four percent of the outstanding shares of the Company's common stock as of the last day of the Company's immediately preceding fiscal year or (b) such other amount as the Company's board of directors may determine.
Annual share issuance increment, percentage of outstanding shares of common stock					4.00%
Restricted stock units issued, aggregate fair value | $		$ 14,261,000	$ 49,261,000
Stock Incentive Plan 2011 [Member] | Restricted Stock Units [Member]
Stock-Based Compensation And Stockholders Equity [Line Items]
Restricted stock units outstanding					2,854,955
Share-based compensation, Number of shares issued		502,383	1,686,767
Stock Incentive Plan 2011 [Member] | Stock Option [Member]
Stock-Based Compensation And Stockholders Equity [Line Items]
Share-based compensation, Number of shares issued		83,644	947,986
Common stock issued pursuant to stock awards, aggregate fair value | $		$ 958,000	$ 9,995,000
2004 Plan [Member]
Stock-Based Compensation And Stockholders Equity [Line Items]
Options outstanding					3,475,715
2011 Plan [Member]
Stock-Based Compensation And Stockholders Equity [Line Items]
Common stock, shares reserved and available for future stock option grants					13,952,559

Stockholders' Equity and Stoc84

Stockholders' Equity and Stock-Based Compensation - Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Number of options outstanding
Number of options, beginning balance	8,479,261	10,404,703
Number of options, granted	972,865	1,756,630
Number of options, exercised	(1,615,116)	(3,186,491)
Number of options, forfeited	(236,714)	(474,695)
Number of options, cancelled		(20,885)
Number of options, Ending balance	7,600,296	8,479,261	10,404,703
Number of options, vested and expected to be vested	7,433,326	8,226,494
Exercisable options at end of period	5,079,091	4,583,432
Weighted average exercise price
Weighted average exercise price, beginning balance	$ 20.49	$ 17.37
Weighted average exercise price, granted	35.50	30.18
Weighted average exercise price, exercised	15.84	15.12
Weighted average exercise price, forfeited	26.66	22.87
Weighted average exercise price, cancelled		23.03
Weighted average exercise price, ending balance	23.20	20.49	$ 17.37
Weighted average exercise price, vested and expected to vest	23.02	20.31
Weighted average exercise price, exercisable at end of period	$ 20.06	$ 16.82
Weighted average remaining contractual term
Weighted average remaining contractual term	6 years 9 months 18 days	7 years 1 month 6 days	7 years 6 months
Weighted average remaining contractual term, vested and expected to vest	6 years 9 months 18 days	7 years 1 month 6 days
Weighted average remaining contractual term, Exercisable options at end of period	6 years 1 month 6 days	6 years 2 months 12 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value, beginning balance	$ 172,921	$ 57,020
Aggregate Intrinsic Value, ending balance	57,663	172,921	$ 57,020
Aggregate Intrinsic Value, vested and expected to vest	57,447	169,248
Aggregate Intrinsic Value, exercisable option	$ 51,494	$ 110,286

Stockholders' Equity and Stoc85

Stockholders' Equity and Stock-Based Compensation - Weighted Average Grant Date Fair Value of Options and Restricted Stock (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Per share of options granted	$ 13.46	$ 13.81	$ 12.07
Per share of restricted stock and restricted stock units granted	$ 36.33	$ 29.36	$ 24.88

Stockholders' Equity and Stoc86

Stockholders' Equity and Stock-Based Compensation - Restricted Stock Activity under 2004 Plan and 2011 Plan (Detail) - shares	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Number of awards outstanding
Beginning balance	2,037,895	806,317
Awards granted	1,634,392	1,658,132
Awards vested	(565,733)	(241,517)
Awards forfeited	(251,599)	(185,037)
Ending balance	2,854,955	2,037,895

Stockholders' Equity and Stoc87

Stockholders' Equity and Stock-Based Compensation - Estimated Fair Value of Stock Option Grants at Date of Grant using Black-Scholes Option Pricing Model with Weighted Average Assumptions (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, minimum	1.62%	0.65%	0.78%
Risk-free interest rate, maximum	1.78%	1.41%	1.32%
Dividend yield	0.00%	0.00%	0.00%
Expected volatility rate, minimum	38.70%	46.90%	50.60%
Expected volatility rate, maximum	42.50%	50.80%	55.40%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term	4 years 11 months 5 days	5 years 3 months 26 days	5 years 7 months 2 days
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term	5 years 1 month 6 days	5 years 6 months 26 days	5 years 9 months 29 days

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 12,618	$ 12,671	$ 37,487	$ 35,582	$ 48,518	$ 37,887	$ 27,033
Cost of revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	881	847	2,615	2,415	3,245	3,064	2,675
Product development [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	3,931	3,485	10,769	9,589	13,174	9,515	5,642
Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	3,152	2,763	9,003	7,868	10,805	8,488	6,629
General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 4,654	$ 5,576	$ 15,100	$ 15,710	$ 21,294	$ 16,820	$ 12,087

Redeemable Noncontrolling Int89

Redeemable Noncontrolling Interests - Additional Information (Detail)	Dec. 31, 2014	Nov. 30, 2014	Dec. 31, 2013	Nov. 30, 2013	Aug. 31, 2013
Travelmob [Member]
Redeemable Noncontrolling Interest [Line Items]
Percentage of ownership interest			68.50%		100.00%
Bookabach [Member]
Redeemable Noncontrolling Interest [Line Items]
Percentage of ownership interest	75.00%		55.00%	55.00%
Percentage of additional ownership interest acquired	20.00%	20.00%

Redeemable Noncontrolling Int90

Redeemable Noncontrolling Interests - Schedule of Changes of Redeemable Noncontrolling Interests (Detail) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Noncontrolling Interest [Abstract]
Beginning balance	$ 9,742	$ 10,584	$ 10,584
Fair value at acquisition				$ 10,966
Net loss attributable to noncontrolling interests	(1,623)		(1,839)	(395)
Changes to redemption value of noncontrolling interests	914	$ 851	2,421
Repurchase of redeemable noncontrolling interests			(1,461)
Currency translation adjustments			37	13
Ending balance	$ 9,033		$ 9,742	$ 10,584

Accumulated Other Comprehensi91

Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income Loss [Abstract]
Foreign currency translation adjustments	$ (56,276)	$ (27,252)	$ (6,728)
Unrealized losses on short-term investments	(183)	(801)	(19)
Defined benefit pension plan adjustments	(4,149)
Total	$ (60,608)	$ (28,053)	$ (6,747)

Income Taxes - Income Before In

Income Taxes - Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Domestic	$ 15,523	$ 27,817	$ 19,934
Foreign	5,716	1,198	8,202
Income before income taxes	$ 21,239	$ 29,015	$ 28,136

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current
Federal					$ 0	$ 0	$ 0
State					250	1,116	1,105
Foreign					5,999	4,771	9,625
Deferred
Federal					5,502	7,733	7,976
State					(831)	98	(524)
Foreign					(5,879)	(1,511)	(5,425)
Change in valuation allowance					2,231	(483)	418
Income tax expense	$ 5,625	$ 845	$ 9,757	$ 5,909	$ 7,272	$ 11,724	$ 13,175
Effective tax rate	36.30%	13.90%	65.10%	31.50%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 30, 2014	Mar. 31, 2014	Nov. 30, 2013	Aug. 31, 2013	Dec. 31, 2011
Income Taxes [Line Items]
Valuation allowance amount		$ 2,463,000				$ 2,463,000	$ 362,000
Tax carryforward limitation description						Events that may cause changes in the Company's tax carryovers include, but are not limited to, a cumulative ownership change of more than 50.0% over a three-year period.
Unrecorded benefit net operating loss carryforwards		382,000				$ 382,000
Tax basis in Spanish intangibles						2,770,000
Cumulative earning in foreign subsidiaries		28,012,000				28,012,000	16,741,000	$ 20,681,000
Unrecognized tax benefits offset against related deferred tax asset						3,663,000	3,177,000	1,242,000
Unrecognized tax benefit impacting effective tax rate		9,122,000				9,122,000	7,555,000	5,265,000
Unrecognized tax benefits		10,074,000				10,074,000	7,555,000	5,590,000					$ 3,658,000
Income tax expense	$ 5,625,000		$ 845,000	$ 9,757,000	$ 5,909,000	7,272,000	11,724,000	13,175,000
Effective income tax rate, expense (Benefit) of wholly owned subsidiaries, amount			$ (2,500,000)			(2,166,000)	(1,191,000)	$ (2,481,000)
Foreign Loss Carryforwards [Member]
Income Taxes [Line Items]
Additional paid-in capital upon utilization of net operating loss and credit carryforwards						750,000
Domestic Tax Authority [Member]
Income Taxes [Line Items]
Additional paid-in capital upon utilization of net operating loss and credit carryforwards						10,323,000
several jurisdictions [Member]
Income Taxes [Line Items]
Unrecognized tax benefits		1,611,000				1,611,000
Unrecognized tax benefits that could change over the next 12 months		726,000				$ 726,000
Minimum [Member] | United States [Member]
Income Taxes [Line Items]
Open tax years						2,011
Minimum [Member] | Adjustment to Net Operating Loss Carryforward [Member]
Income Taxes [Line Items]
Open tax years						2,005
Maximum [Member] | United States [Member]
Income Taxes [Line Items]
Open tax years						2,013
Maximum [Member] | Adjustment to Net Operating Loss Carryforward [Member]
Income Taxes [Line Items]
Open tax years						2,010
Error Correction [Member]
Income Taxes [Line Items]
Increase in income tax expense		796,000
Adjustments to Prior Period Errors [Member]
Income Taxes [Line Items]
Income tax expense				$ (400,000)
Subsidiaries in Singapore and Switzerland [Member]
Income Taxes [Line Items]
Valuation allowance amount		1,920,000				$ 1,920,000	0
Travelmob [Member]
Income Taxes [Line Items]
Percentage of interest in outstanding stock												68.50%
Deferred tax liability							$ 513,000					$ 513,000
Percentage of ownership interest							68.50%					100.00%
Stayz [Member]
Income Taxes [Line Items]
Deferred tax liability							$ 5,313,000
Percentage of ownership interest							100.00%
Valuation allowance amount							$ 1,397,000
Glad to Have You Inc [Member]
Income Taxes [Line Items]
Deferred tax liability		$ 1,653,000				$ 1,653,000				$ 1,653,000
Percentage of ownership interest										100.00%
Bookabach [Member]
Income Taxes [Line Items]
Deferred tax liability							$ 228,000				$ 228,000
Percentage of ownership interest		75.00%				75.00%	55.00%				55.00%
Percentage of additional ownership interest acquired		20.00%				20.00%			20.00%

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Net operating loss carryforward	$ 6,816	$ 6,760
Tax credits	1,082	551
Accrued liabilities	8,960	6,615
Stock compensation	16,621	11,143
Gift card deferred revenue and redemption liability	1,451	1,346
Other deferred revenue	1,413	1,304
Other	959	310
Total deferred tax assets	37,302	28,029
Deferred tax liabilities:
Intangible assets	(37,095)	(34,473)
Property and equipment	(12,170)	(6,530)
Prepaid expenses	(540)	(907)
Other	(1,339)	(536)
Total deferred tax liabilities	(51,144)	(42,446)
Valuation allowance	(2,463)	(362)
Net deferred tax liabilities	$ (16,305)	$ (14,779)

Income Taxes - Summary of Opera

Income Taxes - Summary of Operating Loss Carryforwards and Expiration (Detail) - USD ($) $ in Thousands		3 Months Ended									9 Months Ended		12 Months Ended
		Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]
State research and development credits													$ 2,346	$ 3,220
Net operating losses after tax from foreign local jurisdictions		$ 10,417	$ 162	$ 4,912	$ 3,867	$ 4,443	$ (1,557)	$ 8,478	$ 5,470	$ 5,295	$ 5,942	$ 13,222	$ 13,384	17,686	$ 14,961
Texas Margin Tax Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards, expiration year													Indefinite
Tax credits													$ 310	310
Federal Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards, expiration year													2025-2034
Net operating loss carry forwards			15,722				8,474						$ 15,722	8,474
State Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards, expiration year													2025-2034
Net operating loss carry forwards			396				447						$ 396	447
Federal Research and Development Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards, expiration year													2027-2034
Tax credits													$ 8,386	6,050
State Research and Development Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards, expiration year													2,034
State research and development credits													$ 1,857	498
Foreign Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards, expiration year	[1]												2018-Indefinite
Net operating loss carry forwards			$ 26,046				$ 25,690						$ 26,046	25,690
Foreign Local Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards, expiration year													2018-2020
Net operating losses after tax from foreign local jurisdictions													$ 517	686
Federal Foreign Tax Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards, expiration year													2020-2024
Tax credits													$ 1,351	$ 1,342
[1]	Of the Company's foreign net operating loss carryforwards, $11,697,000 will expire between 2018 and 2030 if not utilized, and $14,349,000 will carryforward indefinitely.

Income Taxes - Summary of Ope97

Income Taxes - Summary of Operating Loss Carryforwards and Expiration (Parenthetical) (Detail) - Foreign Loss Carryforwards [Member]	12 Months Ended
	Dec. 31, 2014USD ($)
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards that will expire between 2018 and 2030 if not utilized	$ 11,697,000
Operating loss carry forwards, expiration year	2018-Indefinite	[1]
Net operating loss carry forwards, not expiring	$ 14,349,000
Operating loss carry forwards, expiration year	Expire between 2018 and 2030
[1]	Of the Company's foreign net operating loss carryforwards, $11,697,000 will expire between 2018 and 2030 if not utilized, and $14,349,000 will carryforward indefinitely.

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Amount of Income Tax Expense Results from Applying Federal Statutory Income Tax Rate to Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Federal tax expense at statutory rate					$ 7,433	$ 10,155	$ 9,848
State taxes, net of federal tax benefit					(552)	958	647
Foreign tax rate differential		$ (2,500)			(2,166)	(1,191)	(2,481)
Deferred charges					1,908	1,959	1,582
Stock compensation					2,430	566	1,679
Research and development credit					(2,346)	(3,220)
Tax basis in Spanish intangibles					(2,770)
Non-deductible expenses					331	2,342	355
Other activity in unrecognized tax benefits					816	540	2,325
Other					(43)	98	(1,198)
Net increase (decrease) in valuation allowance					2,231	(483)	418
Income tax expense (benefit)	$ 5,625	$ 845	$ 9,757	$ 5,909	$ 7,272	$ 11,724	$ 13,175

Income Taxes - Aggregate Change

Income Taxes - Aggregate Changes in Balance of Unrecognized Tax Benefits, Excluding Interest and Penalties (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Balance, beginning of year	$ 7,555	$ 5,590	$ 3,658
Increases for tax positions related to the current year	2,130	1,013	1,815
Increases for tax positions related to prior years	2,166	1,702	1,135
Decreases for tax positions related to prior years	(556)	(369)	(739)
Reductions due to lapsed statute of limitations	(1,221)	(381)	(279)
Balance, end of year	$ 10,074	$ 7,555	$ 5,590

Income Taxes - Schedule of Open

Income Taxes - Schedule of Open Tax Years by Jurisdiction (Detail)	12 Months Ended
	Dec. 31, 2014
Earliest Tax Year [Member] | Germany [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,011
Earliest Tax Year [Member] | France [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,012
Earliest Tax Year [Member] | Brazil [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,009
Earliest Tax Year [Member] | United Kingdom [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,011
Earliest Tax Year [Member] | Switzerland [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,010
Earliest Tax Year [Member] | Australia [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,010
Earliest Tax Year [Member] | Spain [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,010
Earliest Tax Year [Member] | Thailand [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,013
Earliest Tax Year [Member] | Singapore [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,011
Earliest Tax Year [Member] | New Zealand [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,010
Earliest Tax Year [Member] | Colombia [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,013
Earliest Tax Year [Member] | Italy [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,013
Latest Tax Year [Member] | Germany [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | France [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | Brazil [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | United Kingdom [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | Switzerland [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | Australia [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | Spain [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | Thailand [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | Singapore [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | New Zealand [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | Colombia [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014
Latest Tax Year [Member] | Italy [Member]
Open Tax Years Jurisdictions [Line Items]
Open tax year	2,014

Net Income Per Share Attribu101

Net Income Per Share Attributable to HomeAway, Inc. - Computation of Basic and Diluted Net Income Per Share of Common Stock (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended									9 Months Ended		12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator
Net income attributable to HomeAway, Inc.	$ 10,417	$ 162	$ 4,912	$ 3,867	$ 4,443	$ (1,557)	$ 8,478	$ 5,470	$ 5,295	$ 5,942	$ 13,222	$ 13,384	$ 17,686	$ 14,961
Denominator
Weighted average common shares outstanding - basic	95,716	94,378	94,106	93,671	92,699	87,111	85,452	84,920	83,940	95,162	93,507	93,727	85,378	82,382
Dilutive effect of stock options, warrants and restricted stock units	1,972		2,283							2,227	2,851	2,754	2,881	2,560
Weighted average common shares outstanding - diluted	97,688	96,600	96,389	96,011	96,295	90,144	88,215	87,647	86,492	97,389	96,358	96,481	88,259	84,942
Net income per share attributable to HomeAway, Inc.
Basic	$ 0.11		$ 0.05							$ 0.06	$ 0.14	$ 0.14	$ 0.21	$ 0.18
Diluted	$ 0.11		$ 0.05							$ 0.06	$ 0.14	$ 0.14	$ 0.20	$ 0.18

Net Income Per Share Attribu102

Net Income Per Share Attributable to HomeAway, Inc. - Common Equivalent Shares Excluded from Calculation of Diluted Net Loss Per Share attributable to HomeAway, Inc as their Inclusion Would have been Anti-Dilutive (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common equivalent shares excluded from the calculation of net income per share	11,558	10,382	10,826	9,803	9,951	3,157	5,158
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common equivalent shares excluded from the calculation of net income per share	3,295	2,604	3,089	2,038	2,178	3,153	5,151
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common equivalent shares excluded from the calculation of net income per share	547	62	21	49	57	4	7
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common equivalent shares excluded from the calculation of net income per share	7,716	7,716	7,716	7,716	7,716

Domestic and Foreign Operati103

Domestic and Foreign Operations - Revenue from Operations in Domestic and Foreign Regions (Detail) - USD ($) $ in Thousands	3 Months Ended									9 Months Ended		12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue, Major Customer [Line Items]
Total revenue	$ 130,682	$ 109,712	$ 117,112	$ 114,256	$ 105,682	$ 90,269	$ 90,148	$ 86,608	$ 79,464	$ 375,553	$ 337,050	$ 446,762	$ 346,489	$ 280,404
United States [Member]
Revenue, Major Customer [Line Items]
Total revenue												262,412	211,473	173,078
France [Member]
Revenue, Major Customer [Line Items]
Total revenue												59,306	52,222	42,451
United Kingdom [Member]
Revenue, Major Customer [Line Items]
Total revenue												48,996	41,231	35,656
Australia [Member]
Revenue, Major Customer [Line Items]
Total revenue												25,888	3,300	1,141
Germany [Member]
Revenue, Major Customer [Line Items]
Total revenue												24,410	20,719	16,194
Other International [Member]
Revenue, Major Customer [Line Items]
Total revenue												$ 25,750	$ 17,544	$ 11,884

Domestic and Foreign Operati104

Domestic and Foreign Operations - Identifiable Long-Lived Tangible Assets in Domestic and Foreign Regions (Detail) - USD ($) $ in Thousands	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Identifiable long-lived tangible assets, Total	$ 95,283	$ 52,145	$ 40,367
United States [Member]
Segment Reporting Information [Line Items]
Identifiable long-lived tangible assets	85,116	43,673	32,936
International [Member]
Segment Reporting Information [Line Items]
Identifiable long-lived tangible assets	$ 10,167	$ 8,472	$ 7,431

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Total Expenses for Retirement Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Retirement plan contribution expense	$ 1,975	$ 1,907	$ 1,185

Condensed Consolidating Balance

Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 301,293	$ 292,325	$ 292,103	$ 324,608	$ 189,478	$ 118,208
Short-term investments	618,343	520,844		66,798
Accounts receivable, net	24,019	23,189		20,375
Income tax receivable	1,680	1,900		3,340
Prepaid expenses and other current assets	18,269	17,913		9,309
Deferred tax assets	9,384	8,774		8,146
Total current assets	972,988	864,945		432,576
Investment in subsidiaries		19,498
Property and equipment, net	60,773	56,173		39,807
Goodwill	460,049	493,671		507,611	312,412
Intangible assets, net	58,003	70,456		80,665
Non-marketable investments	39,549	35,285		10,112
Deferred tax assets	880	1,545		1,120
Other non-current assets	6,295	8,053		8,781
Total assets	1,598,537	1,530,128		1,080,672
Current liabilities:
Accounts payable	7,487	8,281		3,539
Income tax payable	907	1,344		1,992
Accrued expenses	50,446	50,255		54,625
Deferred revenue	193,769	170,522		151,991
Total current liabilities	252,609	230,402		212,147
Convertible senior notes, net	329,905	316,181
Deferred revenue, less current portion	2,981	3,179		2,983
Deferred tax liabilities	24,376	26,624		24,046
Other non-current liabilities	19,817	12,192		7,557
Total liabilities	629,688	588,578		246,733
Redeemable noncontrolling interests	9,033	9,742		10,584
Total stockholders' equity	959,816	931,808		823,355	$ 517,033	$ 441,009
Total liabilities, redeemable noncontrolling interests and stockholders' equity	1,598,537	1,530,128		1,080,672
Company [Member]
Current assets:
Cash and cash equivalents	160,444	174,337	170,705	213,213
Short-term investments	618,343	520,844
Income tax receivable	796	1,168
Prepaid expenses and other current assets	4,525	6,935
Deferred tax assets	7,660	6,875
Intercompany receivable	790	324
Total current assets	792,558	710,483
Investment in subsidiaries	360,176	399,286
Property and equipment, net	11,259	7,457
Goodwill	0
Intangible assets, net	1,628	1,816
Non-marketable investments	37,506	35,285
Other non-current assets	188	228
Intercompany loans receivable	109,620	117,480
Total assets	1,312,935	1,272,035
Current liabilities:
Income tax payable	307	(153)
Accrued expenses	183	202
Intercompany payable	231	1,074
Total current liabilities	721	1,123
Convertible senior notes, net	329,905	316,181
Deferred tax liabilities	20,167	20,812
Other non-current liabilities	2,326	2,111
Total liabilities	353,119	340,227
Total stockholders' equity	959,816	931,808
Total liabilities, redeemable noncontrolling interests and stockholders' equity	1,312,935	1,272,035
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	16,647	19,977	25,281	22,613
Accounts receivable, net	14,976	12,113
Prepaid expenses and other current assets	10,532	7,972
Deferred tax assets	123	123
Intercompany receivable	13,700	7,156
Total current assets	55,978	47,341
Property and equipment, net	43,695	42,022
Goodwill	210,300	210,300
Intangible assets, net	29,234	32,938
Other non-current assets	318	351
Intercompany loans receivable	18,336	18,336
Total assets	357,861	351,288
Current liabilities:
Accounts payable	4,280	6,765
Income tax payable	(307)	153
Accrued expenses	28,800	29,837
Deferred revenue	125,982	103,571
Intercompany payable	3,051	137
Total current liabilities	161,806	140,463
Deferred revenue, less current portion	2,943	3,133
Deferred tax liabilities	1,775	1,777
Other non-current liabilities	8,918	6,407
Total liabilities	175,442	151,780
Total stockholders' equity	182,419	199,508
Total liabilities, redeemable noncontrolling interests and stockholders' equity	357,861	351,288
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	124,202	98,011	$ 96,117	$ 88,782
Accounts receivable, net	9,043	11,076
Income tax receivable	884	732
Prepaid expenses and other current assets	3,212	3,006
Deferred tax assets	1,601	1,776
Intercompany receivable	2,482	3
Total current assets	141,424	114,604
Property and equipment, net	5,819	6,694
Goodwill	249,749	283,371
Intangible assets, net	27,141	35,702
Non-marketable investments	2,043
Deferred tax assets	880	1,545
Other non-current assets	5,789	7,474
Total assets	432,845	449,390
Current liabilities:
Accounts payable	3,207	1,516
Income tax payable	907	1,344
Accrued expenses	21,463	20,216
Deferred revenue	67,787	66,951
Intercompany payable	13,690	6,272
Total current liabilities	107,054	96,299
Deferred revenue, less current portion	38	46
Deferred tax liabilities	2,434	4,035
Other non-current liabilities	8,573	3,674
Intercompany loans payable	127,956	135,816
Total liabilities	246,055	239,870
Redeemable noncontrolling interests	9,033	9,742
Total stockholders' equity	177,757	199,778
Total liabilities, redeemable noncontrolling interests and stockholders' equity	432,845	449,390
Consolidation, Eliminations [Member]
Current assets:
Intercompany receivable	(16,972)	(7,483)
Total current assets	(16,972)	(7,483)
Investment in subsidiaries	(360,176)	(399,285)
Intercompany loans receivable	(127,956)	(135,816)
Total assets	(505,104)	(542,584)
Current liabilities:
Intercompany payable	(16,972)	(7,483)
Total current liabilities	(16,972)	(7,483)
Intercompany loans payable	(127,956)	(135,816)
Total liabilities	(144,928)	(143,299)
Total stockholders' equity	(360,176)	(399,285)
Total liabilities, redeemable noncontrolling interests and stockholders' equity	$ (505,104)	$ (542,584)

Condensed Consolidating Stateme

Condensed Consolidating Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended									9 Months Ended		12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue:
Listing	$ 106,484		$ 96,601							$ 301,281	$ 278,459	$ 371,939	$ 294,661	$ 238,413
Other	24,198		20,511							74,272	58,591	74,823	51,828	41,991
Total revenue	130,682	$ 109,712	117,112	$ 114,256	$ 105,682	$ 90,269	$ 90,148	$ 86,608	$ 79,464	375,553	337,050	446,762	346,489	280,404
Costs and expenses:
Cost of revenue (exclusive of amortization shown separately below)	19,361		16,926							58,472	50,291	67,612	54,638	45,342
Product development	22,058		20,212							65,235	56,952	77,082	58,226	43,152
Sales and marketing	42,963		42,234							143,850	117,251	154,995	112,967	93,366
General and administrative	23,874		22,995							72,115	69,467	93,131	75,169	56,311
Amortization expense	2,819		3,397							8,713	10,163	13,916	11,668	12,438
Operating income	19,607		11,348							27,168	32,926	40,026	33,821	29,795
Other income (expense):
Interest expense	(4,718)		(4,373)							(13,971)	(8,842)	(13,333)
Interest income	927		552							2,426	1,117	1,728	1,211	928
Other expense, net	(338)		(1,434)							(633)	(6,452)	(7,182)	(6,017)	(2,587)
Total other income (expense)	(4,129)		(5,255)							(12,178)	(14,177)	(18,787)	(4,806)	(1,659)
Income before income taxes	15,478		6,093							14,990	18,749	21,239	29,015	28,136
Income tax (expense) benefit	(5,625)		(845)							(9,757)	(5,909)	(7,272)	(11,724)	(13,175)
Net income	9,853		5,248							5,233	12,840	13,967	17,291	14,961
Less: Impact of noncontrolling interests, net of tax	(564)		336							(709)	(382)	583	(395)
Net income attributable to HomeAway, Inc.	10,417	$ 162	4,912	$ 3,867	$ 4,443	$ (1,557)	$ 8,478	$ 5,470	$ 5,295	5,942	13,222	13,384	$ 17,686	$ 14,961
Comprehensive income (loss) attributable to HomeAway, Inc.	(9,010)		(9,509)							(25,699)	6,997	(5,537)
Company [Member]
Costs and expenses:
Cost of revenue (exclusive of amortization shown separately below)	40		37							120	191	230
Product development	17		23							87	348	391
Sales and marketing	110		98							485	1,237	1,483
General and administrative	1,126		744							3,210	2,300	3,220
Amortization expense	63		63							188	188	251
Operating income	(1,356)		(965)							(4,090)	(4,264)	(5,575)
Other income (expense):
Equity in earnings of consolidated subsidiaries	14,092		7,163							14,994	17,831	23,176
Interest expense	(4,718)		(4,373)							(13,971)	(8,800)	(13,290)
Interest income	999		585							2,567	1,342	2,026
Other expense, net	151		(2)							785	(46)	(234)
Total other income (expense)	10,524		3,373							4,375	10,327	11,678
Income before income taxes	9,168		2,408							285	6,063	6,103
Income tax (expense) benefit	1,249		2,504							5,657	7,159	7,281
Net income	10,417		4,912							5,942	13,222	13,384
Net income attributable to HomeAway, Inc.	10,417		4,912							5,942	13,222	13,384
Comprehensive income (loss) attributable to HomeAway, Inc.	10,693		4,421							6,593	12,580	12,017
Guarantor Subsidiaries [Member]
Revenue:
Listing	64,319		51,232							177,996	143,882	195,882
Other	22,688		19,687							70,278	56,098	71,664
Total revenue	87,007		70,919							248,274	199,980	267,546
Costs and expenses:
Cost of revenue (exclusive of amortization shown separately below)	16,671		13,993							50,039	40,560	53,983
Product development	19,307		17,024							56,508	48,060	65,087
Sales and marketing	20,028		18,218							67,498	50,430	66,628
General and administrative	17,451		16,383							52,476	50,645	68,039
Amortization expense	1,327		1,370							3,980	4,038	5,381
Intercompany (income) expense, net	(3,541)		(6,311)							(14,905)	(18,064)	(19,105)
Operating income	15,764		10,242							32,678	24,311	27,533
Other income (expense):
Interest income	86		87							244	143	227
Other expense, net	(185)		(92)							(182)	(145)	(166)
Total other income (expense)	(99)		(5)							62	(2)	61
Income before income taxes	15,665		10,237							32,740	24,309	27,594
Income tax (expense) benefit	(5,962)		(4,196)							(12,808)	(10,833)	(12,476)
Net income	9,703		6,041							19,932	13,476	15,118
Net income attributable to HomeAway, Inc.	9,703		6,041							19,932	13,476	15,118
Comprehensive income (loss) attributable to HomeAway, Inc.	9,703		6,041							19,932	13,476	15,118
Non-Guarantor Subsidiaries [Member]
Revenue:
Listing	43,962		46,792							128,445	138,365	181,241
Other	2,217		1,884							6,356	5,466	6,545
Total revenue	46,179		48,676							134,801	143,831	187,786
Costs and expenses:
Cost of revenue (exclusive of amortization shown separately below)	5,154		5,379							15,835	16,301	21,969
Product development	2,734		3,165							8,640	8,544	11,604
Sales and marketing	22,825		23,918							75,867	65,584	86,884
General and administrative	5,297		5,868							16,429	16,522	21,872
Amortization expense	1,429		1,964							4,545	5,937	8,284
Intercompany (income) expense, net	3,541		6,311							14,905	18,064	19,105
Operating income	5,199		2,071							(1,420)	12,879	18,068
Other income (expense):
Interest expense	(288)		(266)							(802)	(804)	(1,108)
Interest income	130		146							417	394	540
Other expense, net	(304)		(1,340)							(1,236)	(6,261)	(6,782)
Total other income (expense)	(462)		(1,460)							(1,621)	(6,671)	(7,350)
Income before income taxes	4,737		611							(3,041)	6,208	10,718
Income tax (expense) benefit	(912)		847							(2,606)	(2,235)	(2,077)
Net income	3,825		1,458							(5,647)	3,973	8,641
Less: Impact of noncontrolling interests, net of tax	(564)		336							(709)	(382)	583
Net income attributable to HomeAway, Inc.	4,389		1,122							(4,938)	4,355	8,058
Comprehensive income (loss) attributable to HomeAway, Inc.	(15,314)		(12,808)							(37,230)	(1,228)	(9,496)
Consolidation, Eliminations [Member]
Revenue:
Listing	(1,797)		(1,423)							(5,160)	(3,788)	(5,184)
Other	(707)		(1,060)							(2,362)	(2,973)	(3,386)
Total revenue	(2,504)		(2,483)							(7,522)	(6,761)	(8,570)
Costs and expenses:
Cost of revenue (exclusive of amortization shown separately below)	(2,504)		(2,483)							(7,522)	(6,761)	(8,570)
Other income (expense):
Equity in earnings of consolidated subsidiaries	(14,092)		(7,163)							(14,994)	(17,831)	(23,176)
Interest expense	288		266							802	762	1,065
Interest income	(288)		(266)							(802)	(762)	(1,065)
Total other income (expense)	(14,092)		(7,163)							(14,994)	(17,831)	(23,176)
Income before income taxes	(14,092)		(7,163)							(14,994)	(17,831)	(23,176)
Net income	(14,092)		(7,163)							(14,994)	(17,831)	(23,176)
Net income attributable to HomeAway, Inc.	(14,092)		(7,163)							(14,994)	(17,831)	(23,176)
Comprehensive income (loss) attributable to HomeAway, Inc.	$ (14,092)		$ (7,163)							$ (14,994)	$ (17,831)	$ (23,176)

Condensed Consolidating Stat108

Condensed Consolidating Statement of Cash Flows (Detail) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities
Net cash provided by (used in) operating activities	$ 119,094	$ 111,415	$ 145,364	$ 104,362	$ 95,403
Cash flows from investing activities
Acquisition of businesses, net of cash acquired		(17,847)	(17,847)	(205,470)	(16,207)
Change in restricted cash	122	166	(501)	(492)	773
Purchases of intangibles and other assets	(278)	(303)	(473)	(625)	(251)
Purchases and sales of non-marketable investments	(3,866)	(10,135)	(25,148)	(3,667)	(6,446)
Purchases of short-term investments	(379,387)	(473,331)	(575,606)	(129,782)	(57,080)
Proceeds from maturities and redemptions of marketable securities	272,022	23,048	109,516	46,679	40,406
Proceeds from sales of marketable securities	1,525	4,358	4,358	92,527
Net settlement of foreign currency forwards	15,081	(12,011)	(328)	(2,926)	(1,910)
Purchases of property and equipment	(23,792)	(20,456)	(31,647)	(19,616)	(17,260)
Net cash provided by (used in) investing activities	(118,573)	(506,511)	(537,676)	(223,372)	(57,975)
Cash flows from financing activities
Repurchase of redeemable noncontrolling interest			(1,461)
Proceeds from borrowings on convertible senior notes, net		390,978	390,978
Proceeds from issuance of warrants		38,278	38,278
Purchase of convertible note hedge		(85,853)	(85,853)
Other financing activities		(919)	(919)
Proceeds from exercise of options to purchase common stock	9,640	22,827	25,386	48,473	25,878
Excess tax benefit from stock-based compensation	8,161	2,583	3,092	8,226	7,122
Net cash provided by (used in) financing activities	17,801	367,894	369,501	252,047	33,000
Effect of exchange rate changes on cash and cash equivalents	(9,354)	(5,303)	(9,472)	2,093	842
Net increase (decrease) in cash and cash equivalents	8,968	(32,505)	(32,283)	135,130	71,270
Cash and cash equivalents at beginning of period	292,325	324,608	324,608	189,478	118,208
Cash and cash equivalents at end of period	301,293	292,103	292,325	324,608	$ 189,478
Company [Member]
Cash flows from operating activities
Net cash provided by (used in) operating activities	(8,137)	12,047	21,249
Cash flows from investing activities
Purchases and sales of non-marketable investments	(1,866)	(10,135)	(25,148)
Purchases of short-term investments	(379,387)	(473,331)	(575,606)
Proceeds from maturities and redemptions of marketable securities	272,022	23,048	109,516
Proceeds from sales of marketable securities	1,525	4,358	4,358
Net settlement of foreign currency forwards	11,459	(113)	1,424
Purchases of property and equipment	(5,188)	(276)	(5,498)
Net cash provided by (used in) investing activities	(101,435)	(456,449)	(490,954)
Cash flows from financing activities
Proceeds from borrowings on convertible senior notes, net		390,978	390,978
Proceeds from issuance of warrants		38,278	38,278
Purchase of convertible note hedge		(85,853)	(85,853)
Other financing activities		(919)	(919)
Proceeds from exercise of options to purchase common stock	9,640	22,827	25,386
Excess tax benefit from stock-based compensation	8,161	2,583	3,092
Intercompany tranfers	77,878	34,000	59,867
Net cash provided by (used in) financing activities	95,679	401,894	430,829
Net increase (decrease) in cash and cash equivalents	(13,893)	(42,508)	(38,876)
Cash and cash equivalents at beginning of period	174,337	213,213	213,213
Cash and cash equivalents at end of period	160,444	170,705	174,337	213,213
Guarantor Subsidiaries [Member]
Cash flows from operating activities
Net cash provided by (used in) operating activities	92,525	77,820	99,158
Cash flows from investing activities
Acquisition of businesses, net of cash acquired		(17,847)	(17,847)
Purchases of intangibles and other assets	(278)	(303)	(473)
Purchases of property and equipment	(15,322)	(19,486)	(24,931)
Net cash provided by (used in) investing activities	(15,600)	(37,636)	(43,251)
Cash flows from financing activities
Intercompany tranfers	(80,159)	(37,500)	(58,500)
Net cash provided by (used in) financing activities	(80,159)	(37,500)	(58,500)
Effect of exchange rate changes on cash and cash equivalents	(96)	(16)	(43)
Net increase (decrease) in cash and cash equivalents	(3,330)	2,668	(2,636)
Cash and cash equivalents at beginning of period	19,977	22,613	22,613
Cash and cash equivalents at end of period	16,647	25,281	19,977	22,613
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities
Net cash provided by (used in) operating activities	34,706	21,548	24,957
Cash flows from investing activities
Change in restricted cash	122	166	(501)
Purchases and sales of non-marketable investments	(2,000)
Net settlement of foreign currency forwards	3,622	(11,898)	(1,752)
Purchases of property and equipment	(3,282)	(694)	(1,218)
Net cash provided by (used in) investing activities	(1,538)	(12,426)	(3,471)
Cash flows from financing activities
Repurchase of redeemable noncontrolling interest			(1,461)
Intercompany tranfers	2,281	3,500	(1,367)
Net cash provided by (used in) financing activities	2,281	3,500	(2,828)
Effect of exchange rate changes on cash and cash equivalents	(9,258)	(5,287)	(9,429)
Net increase (decrease) in cash and cash equivalents	26,191	7,335	9,229
Cash and cash equivalents at beginning of period	98,011	88,782	88,782
Cash and cash equivalents at end of period	$ 124,202	$ 96,117	$ 98,011	$ 88,782

Valuation and Qualifying Acc109

Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	$ 1,038	$ 633	$ 425
Additions	471	980	647
Reductions/Write-offs	(846)	(575)	(439)
Ending Balance	663	1,038	633
Deferred Tax Asset Valuation Allowance [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	362	921	507
Additions	2,270	838	753
Reductions/Write-offs	(169)	(1,397)	(339)
Ending Balance	$ 2,463	$ 362	$ 921

Quarterly Financial Data (Detai

Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended									9 Months Ended		12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 130,682	$ 109,712	$ 117,112	$ 114,256	$ 105,682	$ 90,269	$ 90,148	$ 86,608	$ 79,464	$ 375,553	$ 337,050	$ 446,762	$ 346,489	$ 280,404
Net income (loss) attributable to HomeAway, Inc.	$ 10,417	$ 162	$ 4,912	$ 3,867	$ 4,443	$ (1,557)	$ 8,478	$ 5,470	$ 5,295	$ 5,942	$ 13,222	$ 13,384	$ 17,686	$ 14,961
Net income (loss) per share-basic and diluted		$ 0	$ 0.05	$ 0.04	$ 0.05	$ (0.02)	$ 0.10	$ 0.06	$ 0.06
Shares used in per share calculation-basic	95,716	94,378	94,106	93,671	92,699	87,111	85,452	84,920	83,940	95,162	93,507	93,727	85,378	82,382
Shares used in per share calculation-diluted	97,688	96,600	96,389	96,011	96,295	90,144	88,215	87,647	86,492	97,389	96,358	96,481	88,259	84,942

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) $ / shares in Units, $ in Thousands	Nov. 04, 2015USD ($)$ / shares	Oct. 01, 2015USD ($)	Oct. 31, 2015USD ($)	Sep. 30, 2015	Dec. 31, 2013USD ($)
Dwellable Inc [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Cash consideration		$ 18,000
Travelmob [Member]
Subsequent Event [Line Items]
Cash consideration					$ 11,533
Travelmob [Member] | Call Option [Member]
Subsequent Event [Line Items]
Call option purchase agreement start date				Dec. 31, 2016
Travelmob [Member] | Put Option [Member]
Subsequent Event [Line Items]
Put option to repurchase remaining interest agreement start date				Feb. 1, 2017
Travelmob [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Operating expense charge			$ 3,900
Expedia, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Outstanding shares of common stock equity value	$ 3,900,000
Common stock, per share price | $ / shares	$ 38.31
Outstanding shares of common stock exchange in cash | $ / shares	$ 10.15
Common stock, exchange in share	0.2065
Termination fee	$ 138,000

Guarantor and Non-Guarantor Sup

Guarantor and Non-Guarantor Supplemental Financial Information - Additional Information (Detail) - Subsequent Event [Member] - USD ($) $ in Millions	Dec. 08, 2015	Nov. 04, 2015
Senior Unsecured Notes Due 2026 [Member] | Private Placement [Member]
Condensed Financial Statements, Captions [Line Items]
Notes payable	$ 750
Interest rate	5.00%
HMS 1 Inc. [Member]
Condensed Financial Statements, Captions [Line Items]
Percentage of interest in subsidiary		100.00%