PHI (PHIG) 10-K27 Feb 152014 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
Document and Entity Information (USD $)	Dec. 31, 2014	Jun. 30, 2014	Feb. 20, 2015
Document Information [Line Items]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	PHII
Entity Registrant Name	PHI INC
Entity Central Index Key	350403
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Public Float		$679,655,221
Voting Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			2,905,757
Non-Voting Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			12,576,916

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current Assets:
Cash	$6,270	$934
Short-term investments	185,244	85,916
Accounts receivable - net
Trade	178,833	172,538
Other	1,928	1,182
Inventories of spare parts - net	73,793	71,137
Prepaid expenses	9,314	8,357
Deferred income taxes	9,915	12,723
Income taxes receivable	1,227	1,871
Total current assets	466,524	354,658
Property and equipment - net	877,818	785,472
Restricted investments	15,485	14,685
Other	16,253	18,508
Total assets	1,376,080	1,173,323
Current Liabilities:
Accounts payable	27,700	36,874
Accrued and other current liabilities	52,812	54,531
Total current liabilities	80,512	91,405
Long-term debt	543,000	379,000
Deferred income taxes	140,532	127,357
Other long-term liabilities	14,968	15,596
Commitments and contingencies (Note 12)
Shareholders' Equity:
Additional paid-in capital	301,533	296,932
Accumulated other comprehensive loss	-211	-24
Retained earnings	294,197	261,509
Total shareholders' equity	597,068	559,965
Total liabilities and shareholders' equity	1,376,080	1,173,323
Voting Common Stock [Member]
Shareholders' Equity:
Common stock	291	291
Total shareholders' equity	291	291
Non-Voting Common Stock [Member]
Shareholders' Equity:
Common stock	1,258	1,257
Total shareholders' equity	$1,258	$1,257

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Voting Common Stock [Member]
Common stock, par value	$0.10	$0.10
Common stock, shares authorized	12,500,000	12,500,000
Common stock, shares issued	2,905,757	2,905,757
Common stock, shares outstanding	2,905,757	2,905,757
Non-Voting Common Stock [Member]
Common stock, par value	$0.10	$0.10
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	12,576,916	12,576,916
Common stock, shares outstanding	12,458,992	12,458,992

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Operating revenues, net	$836,270	$856,500	$646,686
Expenses:
Direct expenses	670,007	713,090	543,524
Selling, general and administrative expenses	43,171	38,820	39,051
Total operating expenses	713,178	751,910	582,575
(Gain) loss on disposition of assets, net	848	-16,604	317
Impairments of assets	10,508	1,648
Equity in loss of unconsolidated affiliate	96	262	863
Operating income	111,640	119,284	62,931
Interest expense	29,510	29,756	29,533
Loss on debt extinguishment	29,833
Other (income),net	-818	-613	-651
Total expenses	58,525	29,143	28,882
Earnings before income taxes	53,115	90,141	34,049
Income tax expense	20,427	31,185	15,992
Net earnings	$32,688	$58,956	$18,057
Earnings per share:
Basic	$2.11	$3.81	$1.17
Diluted	$2.08	$3.77	$1.17
Weighted average shares outstanding:
Basic	15,483	15,474	15,418
Diluted	15,685	15,639	15,488

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net earnings	$7,392	$17,249	$13,368	($5,321)	$16,825	$13,777	$19,516	$8,838	$32,688	$58,956	$18,057
Unrealized (loss) gain on short-term investments									-285	44	92
Other Unrealized loss									-24
Changes in pension plan assets and benefit obligations									17	-2	-22
Tax impact									105	-15	-28
Total comprehensive income									$32,501	$58,983	$18,099

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Non-Voting Common Stock [Member]	Voting Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
In Thousands	Total	Non-Voting Common Stock [Member]	Voting Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Balance at Dec. 31, 2011	$477,337	$1,246	$285	$291,403	($93)	$184,496
Balance, Shares at Dec. 31, 2011		12,459	2,853
Net earnings	18,057					18,057
Unrealized gain loss on short-term investments	55				55
Changes in pension plan assets and benefit obligations	-13				-13
Issuance of non-voting common stock (upon vesting of restricted stock units)	4,179			4,179
Issuance of non-voting common stock (upon vesting of restricted stock units), shares		106
Balance at Dec. 31, 2012	499,615	1,246	285	295,582	-51	202,553
Balance, Shares at Dec. 31, 2012		12,565	2,853
Net earnings	58,956					58,956
Unrealized gain loss on short-term investments	28				28
Changes in pension plan assets and benefit obligations	-1				-1
Amortization of unearned stock-based compensation	2,403			2,403
Issuance of non-voting common stock (upon vesting of restricted stock units)	17	17
Issuance of non-voting common stock (upon vesting of restricted stock units), shares		4
Cancellation of restricted non-voting stock units for tax withholdings on vested shares	-65	-6		-59
Cancellation of restricted non-voting stock units for tax withholdings on vested shares, shares		-1
Issuance of voting common stock (upon vesting of restricted stock units)	9		9
Issuance of voting common stock (upon vesting of restricted stock units), shares			84
Cancellation of restricted voting stock units for tax withholdings on vested shares	-997		-3	-994
Cancellation of restricted voting stock units for tax withholdings on vested shares, shares			-31
Balance at Dec. 31, 2013	559,965	1,257	291	296,932	-24	261,509
Balance, Shares at Dec. 31, 2013		12,568	2,906
Net earnings	32,688					32,688
Unrealized gain loss on short-term investments	-173				-173
Changes in pension plan assets and benefit obligations	10				10
Amortization of unearned stock-based compensation	4,753			4,753
Issuance of non-voting common stock (upon vesting of restricted stock units)	1	1
Issuance of non-voting common stock (upon vesting of restricted stock units), shares		12
Cancellation of restricted non-voting stock units for tax withholdings on vested shares	-178			-178
Cancellation of restricted non-voting stock units for tax withholdings on vested shares, shares		-4
Other	2			26	-24
Balance at Dec. 31, 2014	$597,068	$1,258	$291	$301,533	($211)	$294,197
Balance, Shares at Dec. 31, 2014		12,576	2,906

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities:
Net earnings	$32,688	$58,956	$18,057
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	50,848	42,848	41,495
Deferred income taxes	16,071	21,921	15,620
Loss (gain) on asset dispositions	848	-16,604	317
Equity in loss of unconsolidated affiliate	96	262	863
Loss on debt extinguishment	29,833
Impairment of assets	10,508	1,648
Other	-96	427	-115
Changes in operating assets and liabilities:
Accounts receivable	-6,758	-32,123	-41,567
Inventories of spare parts	-2,656	-5,062	-8,831
Income taxes receivable	644	-1,015	-1,267
Other assets	-1,212	3,104	-81,199
Accounts payable and accrued liabilities	-10,946	27,191	99,876
Other long-term liabilities	-348	3,543	7,301
Net cash provided by operating activities	119,519	105,096	50,550
Investing activities:
Purchase of property and equipment	-157,690	-102,726	-128,475
Proceeds from asset dispositions	10,266	42,197	11,302
Purchase of short-term investments	-465,094	-375,503	-216,265
Proceeds from sale of short-term investments	363,110	338,970	249,041
Payments of deposits on aircraft	-6,948	-9,318	-8,717
Refund of deposits on aircraft	11,506	8,161	2,500
Loan to unconsolidated affiliate	-200		-975
Other investments	-200		-50
Net cash used in investing activities	-245,050	-98,219	-91,639
Financing activities:
Proceeds from issuance of Senior Notes due 2019	500,000
Repayment of Senior Notes due 2018	-300,000
Premium and costs to retire debt early	-26,749
Debt issuance costs	-6,232
Repurchase of common stock	-152	-1,037	-1,861
Proceeds from line of credit	264,253	164,771	127,323
Payments on line of credit	-300,253	-172,526	-86,615
Net cash provided by (used in) financing activities	130,867	-8,792	38,847
Increase (decrease) in cash	5,336	-1,915	-2,242
Cash, beginning of year	934	2,849	5,091
Cash, end of year	6,270	934	2,849
Cash paid during the period for:
Interest	25,415	28,675	28,775
Income Taxes	9,590	1,161	237
Accrued payables related to purchases of property and equipment	$192	$176	$101

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	-1	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

	Nature of Operations, Basis of Consolidation, and Other General Principles

	PHI, Inc. and its subsidiaries (“PHI”, the “Company”, “we”, “us”, or “our”) provide transportation services to, from, and among offshore facilities engaged in the oil and gas exploration, development, and production industry, which is primarily in North America and to a lesser extent in West Africa and the Middle East. We also provide air medical transportation services for hospitals and medical programs as well as aircraft maintenance services to third parties in North America and the Middle East.

	The consolidated financial statements include the accounts of PHI, Inc. and its subsidiaries after the elimination of all intercompany accounts and transactions. We apply the equity method of accounting for investments in entities, if we have the ability to exercise significant influence over the operating and financial policies of the entity. We report our share of earnings or losses of equity investees in the accompanying Consolidated Statements of Operations as equity in earnings (loss) of unconsolidated affiliates.

	At December 31, 2014, Al A. Gonsoulin, Chairman of the Board and Chief Executive Officer, beneficially owned stock representing approximately 69.5% of the total voting power. As a result, he exercises control over the election of PHI’s directors and the outcome of matters requiring a shareholder vote.

	Use of Estimates

	The preparation of financial statements is in conformity with accounting principles generally accepted in the United States of America (“GAAP”), which requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

	Significant estimates include:

	Estimates of contractual allowances applicable to billings in the Air Medical segment,

	Inventories of spare parts,

	Valuation reserve related to obsolete and excess inventory,

	Reserves related to unpaid Oil and Gas segment accounts,

	Depreciable lives and salvage values of property and equipment,

	Valuation allowance for deferred tax assets,

	Income taxes,

	Health care insurance claims and workers’ compensation liability, and

	Impairment of long-lived assets.

	Cash and Cash Equivalents

	We consider all highly liquid investments with maturities of three months or less, when purchased, to be cash equivalents.

	Trade Receivables, net

	Trade and other receivables are stated at net realizable value. Air Medical trade receivables are presented net of allowances for contractual discounts and uncompensated care. Contractual allowances and uncompensated care are estimated based on historical collection experience by payor category. The main payor categories are Medicare, Medicaid, Insurance, and Self-Pay. We analyze our historical payment of accounts by payor category on a monthly basis, and adjust our accounts receivable allowance based upon each category’s historical collection percentage.



	Provisions for contractual discounts and uncompensated care that we applied to our Air Medical trade receivables (expressed as a percentage of total segment billings) at December 31 are as follows:



			2014				2013
	Allowance for contractual discounts			53	%			44	%
	Allowance for uncompensated care			23	%			27	%

	Short-term Investments

	Short-term investments consist of money market funds, commercial paper, debt issued by the U.S. government or its agencies, and corporate bonds and notes, which represent funds available for current operations. In accordance with GAAP, these short-term investments are classified as available for sale. The Company recorded less than $0.3 million in net unrealized losses in 2014. These losses are reflected as a separate component of stockholders’ equity.

	Inventories of Spare Parts

	The Company’s inventories are stated at average cost and consist primarily of spare parts. Portions of the Company’s inventories are used parts that are often exchanged with parts removed from aircraft, reworked to a useable condition according to manufacturers’ and FAA specifications, and returned to inventory. Reusable aircraft parts are included in inventory at the average cost of comparable parts. The rework costs are expensed as incurred. The Company also records an allowance for obsolete and slow-moving parts, relying principally on specific identification of such inventory. Valuation reserves related to obsolescence and slow-moving inventory were $13.5 million and $12.3 million at December 31, 2014 and 2013, respectively.

	Property and Equipment

	The Company records its property and equipment at cost less accumulated depreciation. For financial reporting purposes, the Company uses the straight-line method to compute depreciation based upon estimated useful lives of five to fifteen years for flight equipment and three to ten years for other equipment. Leasehold improvements are amortized over the shorter of the life of the respective asset or the term of the lease agreement and range from six to ten years. The salvage value used in calculating depreciation of aircraft ranges from 25% to 54%, and is based on sale proceeds to carrying value for aircraft sales (historical as of 2007). The cost of scheduled inspections and modifications for flight equipment are charged to maintenance expense as incurred. We charge maintenance and repair costs to earnings as the costs are incurred. The cost of certain aircraft components are covered under a contractual arrangement with the manufacturer, commonly referred to as “power-by-the-hour” contracts. Under these agreements, we are charged an agreed amount per hour of flying time. The costs charged under these contractual arrangements are recognized in the period in which the flight hours occur. To the extent that we have not yet been billed for costs incurred under these arrangements, these costs are included in accrued expenses on our consolidated balance sheets. Modifications that enhance the operating performance or extend the useful lives of the aircraft are capitalized and depreciated over the remaining life of the asset. Upon selling or otherwise disposing of property and equipment, the Company removes the cost and accumulated depreciation from the accounts and reflects any resulting gain or loss in earnings at the time of sale or other disposition.

The Company reviews its long-lived assets and certain identifiable intangibles for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The Company measures recoverability of assets to be held and used by comparing the carrying amount of an asset to future undiscounted net cash flows that it expects the asset to generate. When an asset is determined to be impaired, the Company recognizes that impairment amount, which is measured by the amount that the carrying value of the asset exceeds its fair value. Similarly, the Company reports assets that it expects to sell at the lower of the carrying amount or fair value less costs to sell.

During the twelve months ended December 31, 2014, we sold nine light and three fixed wing aircraft previously utilized in our Oil and Gas segment. The carrying value prior to the sale was $5.5 million. These assets were sold for $5.9 million, which resulted in a gain of $0.4 million. We also sold or disposed of one medium and four light aircraft previously utilized in our Air Medical segment. The carrying value prior to the sale was $10.8 million. These assets were sold for $8.2 million, resulting in a loss of $2.6 million. These aircraft no longer met our strategic needs. Sales and disposals of various ancillary equipment resulted in a gain of $1.4 million.

During the third quarter of 2013, we sold one light aircraft previously utilized in our Oil and Gas segment and miscellaneous equipment with a carrying value of $1.2 million. Cash proceeds totaled $2.6 million, resulting in a gain on the sale of these assets of $1.4 million. During the twelve months ended December 31, 2013, we also sold two heavy aircraft previously utilized in our Oil and Gas segment. The carrying value prior to the sale was $20.6 million. These assets were sold for $37.0 million, resulting in a gain of $16.4 million recorded in the second quarter of 2013. These aircraft no longer met our strategic needs. In addition, we sold an airframe to a charitable organization, which resulted in a loss of $1.7 million in the second quarter of 2013.

Impairment Losses

We test our assets for impairment annually, or more frequently if events or a change in circumstances indicate that an impairment may have occurred. In connection with our normal recurring impairment testing, we recorded an impairment loss in the year ended December 31, 2014 for 13 medium aircraft in our Oil and Gas segment and one medium aircraft in our Air Medical segment. The carrying value of these aircraft was $16.5 million. Following a market analysis, we determined that the market value for these aircraft was $6.0 million. Similarly, we also recorded an impairment loss in the year ended 2013 for two medium aircraft in our Oil and Gas segment and two medium aircraft in our Air Medical segment. The carrying value of these aircraft was $4.0 million. Following a market analysis, we determined that the market value of these aircraft was $2.4 million. As a result of these analyses, we recorded aggregate non-cash pre-tax impairment losses of $10.5 million and $1.6 million for 2014 and 2013, respectively.

Deferred Financing Costs

Costs of obtaining long-term debt financing are deferred and amortized ratably over the term of the related debt agreement.

Self-Insurance

The Company maintains a self-insurance program for a portion of its health care costs. Self-insurance costs are accrued based upon the aggregate of the liability for reported claims and the estimated liability for claims incurred but not reported. The Company’s insurance retention was $250,000 per claim through December 31, 2014. As of December 31, 2014 and 2013, the Company had $1.7 million and $1.5 million, respectively, of accrued liabilities related to health care claims.

There is also a $0.5 million deductible per incident on our workers’ compensation program. We have accrued $2.5 million and $2.9 million for the years 2014 and 2013, respectively, related to workers’ compensation claims.

The Company owns an offshore insurance company to realize savings in reinsurance costs on its insurance premiums. Amounts paid to this captive company in 2014 and 2013 totaled $0.9 million and $0.8 million, respectively. The results of the captive are fully consolidated in the accompanying consolidated financial statements.

Revenue Recognition

The Company recognizes revenue related to aviation transportation services after the services are performed or the contractual obligations are met. Aircraft maintenance services revenues are recognized at the time the repair or services work is completed. Revenues related to the Company’s Air Medical segment independent provider model services are recorded net of contractual allowances under agreements with third party payors, and also recorded net of uncompensated care allowances when the services are provided. Revenues generated under the hospital based model consist of a fixed monthly rate for aircraft availability and an hourly rate for flight time. We estimate contractual allowances and uncompensated care based on historical collection experience by payor category. The main payor categories are Medicaid, Medicare, Insurance, and Self-Pay. Changes in payor mix, reimbursement rates and uncompensated care rates are the factors most subject to sensitivity and variability in calculating our allowances. We compute a historical payment analysis of accounts by category. The allowance percentages calculated are applied to the payor categories, and the necessary adjustments are made to the revenue allowance. The allowance for contractual discounts was $96.6 million, $74.7 million, and $54.6 million as of December 31, 2014, 2013, and 2012, respectively. The allowance for uncompensated care was $41.9 million, $46.4 million, and $48.0 million as of December 31, 2014, 2013, and 2012, respectively. Included in the allowance for uncompensated care above is the value of services to patients who are unable to pay when it is determined that they qualify as charity care. The value of these services was $9.1 million, $7.9 million, and $6.2 million for the years ended December 31, 2014, 2013, and 2012, respectively. The estimated cost of providing charity services was $2.1 million, $3.0 million, and $2.2 million for the years ended December 31, 2014, 2013, and 2012, respectively. The estimated costs of providing charity services are based on a calculation that applies a ratio of costs to the charges for uncompensated charity care. The ratio of costs to charges is based on the Air Medical segment’s total expenses divided by gross patient service revenue.

In determining the allowance estimates for our Air Medical segment’s billing, receivables and revenue, we utilize the prior twelve months’ payment history by each individual payor group and also the payment history evaluated on a state by state basis. A percentage of amounts collected compared to the total invoice is determined from this process and applied to the current month’s billings and receivables. If a receivable related to the self-pay category is outstanding nine months or greater, we record a reserve equal to 100% of the receivable. Other payor categories are scrutinized when they are outstanding for a nine month period and additional allowances are recorded if warranted.

Provisions for contractual discounts and estimated uncompensated care that we applied to our Air Medical revenues (expressed as a percentage of total segment billings) were as follows:



		Revenue
		Year Ended December 31,
		2014				2013				2012
Provision for contractual discounts			72	%			60	%			56	%
Provision for uncompensated care			2	%			10	%			11	%

Amounts attributable to Medicaid, Medicare, Insurance, and Self Pay as a percentage of net Air Medical revenues are as follows:



		Year Ended December 31,
		2014				2013				2012
Insurance			74	%			73	%			69	%
Medicare			18	%			19	%			21	%
Medicaid			8	%			7	%			9	%
Self-Pay			0	%			1	%			1	%

Our Air Medical contract in the Middle East requires us to provide multiple products and services, including helicopter leasing, flight services for helicopter emergency medical service operations, aircraft maintenance, provision of spare parts and insurance coverage for the customer-owned aircraft, training services, and base construction. All services are delivered and earned monthly over a three year contractual period which began on September 29, 2012. The customer may terminate the contract prior to the end of the contract term by giving ninety days advance notice and paying an early termination fee of $13.5 million. Each of the major deliverables mentioned above qualify as separate units of accounting under the accounting guidance for such arrangements. The selling price for each product or service was determined based upon third-party evidence and estimates.

Income Taxes

Income taxes are accounted for in accordance with the provisions of Accounting Standards Codification 740, Income Taxes. The Company provides for income taxes using the asset and liability method under which deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. The deferred tax assets and liabilities measurement uses enacted tax rates that are expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The Company recognizes the effect of any tax rate changes in income of the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized.

Earnings per Share

Basic earnings per share is computed by dividing earnings (loss) during the period by the weighted average number of voting and non-voting shares outstanding during each period. Diluted earnings per share is computed by dividing net income (loss) during the period by the weighted average number of shares of common stock that would have been outstanding assuming the issuance of potentially dilutive shares of common stock as if such shares were outstanding during the reporting period, net of shares to be repurchased using the treasury stock method. Dilutive shares for this purpose assumes restricted stock unit awards have vested.

Concentration of Credit Risk

Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of trade accounts receivable. The Company does not believe significant credit risk exists with respect to these trade accounts receivable at December 31, 2014.

PHI conducts a majority of its business with major and independent oil and gas exploration and production companies with operations in the Gulf of Mexico. The Company also provides services to major medical centers and U.S. governmental agencies. The Company continually evaluates the financial strength of its customers, but generally does not require collateral to secure its customer receivables. The Company establishes an allowance for doubtful accounts based upon factors surrounding the credit risk of specific customers, current market conditions, and other information. Amounts are charged off as uncollectible when collection efforts have been exhausted. The allowance for doubtful accounts in the Oil and Gas and Technical Services segments was $0.1 million at December 31, 2014 and 2013. The Company’s two largest oil and gas customers accounted for 30% of consolidated operating revenues for the year ended December 31, 2014, 28% for the year ended December 31, 2013, and 28% for the year ended December 31, 2012. The Company also carried accounts receivable from these same customers totaling 18% and 19% of net trade receivables on December 31, 2014 and 2013, respectively. The Company’s largest Air Medical customer accounted for 10% and 17% of consolidated operating revenues for the years ended December 31, 2014 and 2013, respectively. The Company also carried accounts receivable from this customer totaling 20% of net trade receivables on December 31, 2014 and 2013.

Trade receivables representing amounts due pursuant to air medical independent provider model services are carried net of an allowance for estimated contractual adjustments and uncompensated care on unsettled invoices. The Company monitors its collection experience by payor category within the Air Medical segment and updates its estimated collections to be realized as deemed necessary. The allowance for contractual discounts was $96.6 million, $74.7 million, and $54.6 million as of December 31, 2014, 2013, and 2012, respectively. The allowance for uncompensated care was $41.9 million, $46.4 million, and $48.0 million as of December 31, 2014, 2013, and 2012, respectively.

Substantially all of the Company’s cash is maintained in one financial institution in amounts that typically exceed federally insured limits. The Company has not experienced any losses in such accounts and based on current circumstances does not believe that it is exposed to significant credit risk.

New Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers, which provides a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and will supersede most current revenue recognition guidance. The standard is effective for public entities for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted. The effects of this standard on our financial position, results of operations and cash flows are not yet known.

In August 2014, the FASB issued ASU 2014-15 Presentation of Financial Statements – Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. ASU 2014-15 requires management to assess the entity’s ability to continue as a going concern, and to provide related disclosures in certain circumstances. ASU 2014-15 is effective for annual and interim periods beginning after December 15, 2016. The company believes that the impact of the implementation of this new guidance on its consolidated financial statements and disclosures will not be significant.

Investments

Investments	12 Months Ended
Investments	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Investments	-2	INVESTMENTS

	We classify all of our short term investments as available-for-sale. We carry these at fair value and report unrealized gains and losses, net of taxes, in Accumulated other comprehensive loss (income) until realized. These gains and losses are reflected as a separate component of shareholders’ equity in our consolidated balance sheets and our consolidated statements of shareholders’ equity. Cost, gains, and losses are determined using the specific identification method. In the years ended December 31, 2014, 2013, and 2012, we received proceeds from the sales of these securities of $363.1 million, $339.0 million, and $249.0 million, respectively. Gains and losses on these sales were negligible and all amounts reclassified from accumulated other comprehensive income were immaterial.

	Investments consisted of the following as of December 31, 2014:



						Unrealized			Unrealized				Fair
			Cost Basis			Gains			Losses				Value
			(Thousands of dollars)
	Investments:
	Money Market Mutual Funds		$	68,612		$	—		$	—			$	68,612
	Municipal bonds and notes			1,500			2			—				1,502
	Corporate bonds and notes			130,864			19			(268	)			130,615

	Subtotal			200,976			21			(268	)			200,729
	Deferred compensation plan assets included in other assets			2,386			—			—				2,386

	Total		$	203,362		$	21		$	(268	)		$	203,115


	$15.5 million of our investments are long-term and included on the balance sheet as Restricted investments as they are securing outstanding letters of credit with maturities beyond one year.

	Investments consisted of the following as of December 31, 2013:



						Unrealized			Unrealized				Fair
			Cost Basis			Gains			Losses				Value
			(Thousands of dollars)
	Investments:
	Money Market Mutual Funds		$	18,470		$	—		$	—			$	18,470
	Commercial Paper			2,999			—			—				2,999
	Municipal bonds and notes			1,500			—			(1	)			1,499
	Corporate bonds and notes			77,595			67			(29	)			77,633

	Subtotal			100,564			67			(30	)			100,601
	Deferred compensation plan assets included in other assets			2,109			—			—				2,109

	Total		$	102,673		$	67		$	(30	)		$	102,710


	$14.7 million of our investments at December 31, 2013 are long-term and included on the balance sheet as Restricted investments as they are securing outstanding letters of credit with maturities beyond one year.



	The following table presents the cost and fair value of our debt investments based on maturities as of December 31,



			2014						2013
			Amortized			Fair			Amortized				Fair
			Costs			Value			Costs				Value
			(Thousands of dollars)
	Due in one year or less		$	70,180		$	70,169		$	32,536			$	32,538
	Due within two years			62,184			61,948			49,558				49,593

	Total		$	132,364		$	132,117		$	82,094			$	82,131


	The following table presents the average coupon rate percentage and the average days to maturity of our debt investments as of December 31,



		2014						2013
		Average			Average			Average				Average
		Coupon			Days To			Coupon				Days To
		Rate (%)			Maturity			Rate (%)				Maturity
Commercial Paper			0			0			0.15				86
Municipal bonds and notes			0.528			134			0.528				499
Corporate bonds and notes			1.828			348			2.134				390

The following table presents the fair value and unrealized losses related to our investments that have been in a continuous unrealized loss position for less than twelve months as of December 31,



		2014						2013
					Unrealized							Unrealized
		Fair Value			Losses			Fair Value				Losses
		(Thousands of dollars)
Commercial Paper		$	—		$	—		$	—			$	—
Municipal bonds and notes			—			—			1,499				(1	)
Corporate bonds and notes			100,071			(268	)		34,772				(29	)

Total		$	100,071		$	(268	)	$	36,271			$	(30	)


As of December 31, 2014 and December 31, 2013, we had no investments in a continuous unrealized loss position for more than twelve months.

From time to time over the periods covered in our financial statements included herein, our investments have experienced net unrealized losses. We consider these declines in market value to be due to market conditions, and we do not plan to sell these investments prior to maturity. For these reasons, we do not consider any of our investments to be other than temporarily impaired at December 31, 2014 and 2013. The assessment of whether an investment in a debt security has suffered an other-than-temporary impairment is based on whether the Company has the intent to sell or more likely than not will be required to sell the debt security before recovery of its amortized costs. Further, if the Company does not expect to recover the entire amortized cost basis of the debt security, an other-than-temporary impairment is considered to have occurred and it is measured by the present value of cash flows expected to be collected less the amortized cost basis (credit loss). The Company determined it did not have any other-than-temporary impairments relating to credit losses on debt securities for the year ended December 31, 2014 and 2013.

The Company reviews its long-lived assets and certain identifiable intangibles for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The Company measures recoverability of assets to be held and used by comparing the carrying amount of

an asset to future undiscounted net cash flows that it expects the asset to generate. When an asset is determined to be impaired, the Company recognizes that impairment amount, which is measured by the amount that the carrying value of the asset exceeds its fair value. Similarly, the Company reports assets that it expects to sell at the lower of the carrying amount or fair value less costs to sell.

Fair_Value

Fair Value	12 Months Ended
Fair Value	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value	-3	FAIR VALUE

	Accounting guidance defines fair value as the price that would be received to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. This guidance establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. The hierarchy for inputs is categorized into three levels based on the reliability of inputs as follows:

	Level 1: Quoted market prices in active markets for identical assets or liabilities.

	Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.

	Level 3: Unobservable inputs that are not corroborated by market data.

	The following tables summarize the valuation of our investments and financial instruments by the above pricing levels as of the valuation dates listed:



					December 31, 2014
			Total		(Level 1)		(Level 2)
	Investments:
	Money Market Mutual Funds		$	68,612	$	68,612	$	—
	Municipal bonds and notes			1,502		—		1,502
	Corporate bonds and notes			130,615		—		130,615

				200,729		68,612		132,117
	Deferred compensation plan assets			2,386		2,386		—

	Total		$	203,115	$	70,998	$	132,117




					December 31, 2013
			Total		(Level 1)		(Level 2)
	Investments:
	Money Market Mutual Funds		$	18,470	$	18,470	$	—
	Commercial Paper			2,999		—		2,999
	Municipal bonds and notes			1,499		—		1,499
	Corporate bonds and notes			77,633		—		77,633

				100,601		18,470		82,131
	Deferred compensation plan assets			2,109		2,109		—

	Total		$	102,710	$	20,579	$	82,131


	The Company holds its short-term investments in an investment fund consisting of high quality money market instruments of governmental and private issuers, which is classified as a short-term investment. Level 1 inputs are quoted prices (unadjusted) for identical assets or liabilities in active markets. These items are traded with sufficient frequency and volume to provide pricing on an ongoing basis. The fair values of the shares of these funds are based on observable market prices, and therefore, have been categorized in Level 1 in the fair value hierarchy. Level 2 inputs reflect quoted prices for identical assets or liabilities that are not active. These items may not be traded daily; examples include corporate bonds and U.S. government agencies. Assets are valued based on prices derived by independent third parties that use inputs such as benchmark yields, reported trades, broker/dealer quotes, and issuer spreads. Prices are reviewed and can be challenged with the independent parties and/or overridden by the Company, if it is believed such would be more reflective of fair value. Investments included in other assets, which relate to the liability for the Officers’ Deferred Compensation Plan, consist mainly of multiple investment funds that are highly liquid and diversified.

	Cash, accounts receivable, accounts payable and accrued liabilities all had fair values approximating their carrying amounts at December 31, 2014 and 2013.

	The Company reviews its aircraft for impairment on an annual basis or on an interim basis whenever events occur or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. In such evaluation, the estimated future undiscounted cash flows generated by a particular asset group are compared with the book value of the asset group to determine if an impairment charge is necessary. Similar aircraft model types are grouped together for impairment testing purposes.

	The Company estimates cash flows based upon historical data adjusted for the company’s best estimate of expected future market performance. If an asset group fails the undiscounted cash flow test, the company uses the discounted cash flow method to determine the estimated fair value of each asset group and compares such estimated fair value to the book value of each asset group in order to determine if impairment exists. If impairment exists, the book value of the asset group is reduced to its estimated fair value.

	The below table summarizes the combined fair value of the assets that incurred impairments during the years ended December 31, 2014 and 2013, along with the amount of the impairment. The impairment charges were recorded in Impairment of assets.



			Year Ended December 31,
			2014		2013
			(Thousands of dollars)
	Amount of impairment incurred		$	10,508	$	1,648
	Combined fair value of assets incurring impairment		$	6,000	$	2,400

Property_and_Equipment

Property and Equipment	12 Months Ended
Property and Equipment	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property and Equipment	-4	PROPERTY AND EQUIPMENT
	The following table summarizes the Company’s property and equipment at December 31.


			2014			2013
			(Thousands of dollars)
	Flight equipment		$	1,053,640		$	959,986
	Facility & improvements			61,246			57,723
	Operating equipment			24,764			24,594
	Data processing equipment			32,374			33,870
	Vehicles			8,133			7,867
	Medical equipment			7,377			7,079
	Other			5,332			4,898

				1,192,866			1,096,017
	Less accumulated depreciation and amortization			(315,048	)		(310,545	)

	Property and equipment, net		$	877,818		$	785,472

	Depreciation expense related to property and equipment was $43.7 million in 2014, $38.9 million in 2013, and $35.0 million in 2012.

Other_Assets

Other Assets	12 Months Ended
Other Assets	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	-5	OTHER ASSETS
	The following table summarizes the Company’s other assets at December 31.


			2014		2013
			(Thousands of dollars)
	Deposits on future purchases of aircraft		$	8,305	$	12,863
	Deferred financing cost			5,246		3,196
	Investments (Officers’ Deferred Compensation Plan)			2,386		2,109
	Other			316		340

	Total		$	16,253	$	18,508

Accrued_and_Other_Current_Liab

Accrued and Other Current Liabilities	12 Months Ended
Accrued and Other Current Liabilities	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued and Other Current Liabilities	-6	ACCRUED AND OTHER CURRENT LIABILITIES
	Accrued and other current liabilities as of December 31 consisted of the following:


			2014		2013
			(Thousands of dollars)
	Salaries & wages		$	16,203	$	14,318
	Incentive compensation			11,730		11,617
	Income taxes			3,787		6,790
	Interest			7,891		5,621
	Vacation payable			6,112		5,751
	Group medical			1,735		1,516
	Transportations tax			907		1,975
	Operating lease			1,227		1,048
	Workers compensation			1,185		3,684
	Other			2,035		2,211

	Total accrued liabilities		$	52,812	$	54,531

LongTerm_Debt

Long-Term Debt	12 Months Ended
Long-Term Debt	Dec. 31, 2014
Debt Disclosure [Abstract]
Long-Term Debt	-7	LONG-TERM DEBT

	The components of long-term debt as of December 31 are as follows:



			2014		2013
			(Thousands of dollars)
	Senior Notes issued March 17, 2014, interest only payable semi-annually at 5.25%, maturing March 15, 2019		$	500,000	$	—
	Senior Notes issued September 23, 2010, interest only payable semi-annually at 8.625% maturing October 15, 2018			—		300,000
	Revolving Credit Facility due October 1, 2016 with a group of commercial banks, interest payable at variable rates			43,000		79,000

	Total long-term debt		$	543,000	$	379,000




	Annual maturities of long-term debt for each of the five years following December 31, 2014 and in total thereafter follow (in thousands):



	2015		$	—
	2016			43,000
	2017			—
	2018			—
	2019			500,000
	Thereafter			—

	Total		$	543,000


	Senior Notes – The 5.25% Senior Notes (“Notes”) are unconditionally guaranteed on a senior basis by our domestic subsidiaries and are general, unsecured obligations of ours and the subsidiary guarantors. We have the option to redeem some or all of the Notes at any time on or after March 15, 2016 at specified redemption prices, and prior to that time pursuant to certain make-whole provisions. The Notes contain restrictive covenants, including limitations on incurring indebtedness, creating liens, selling assets, and entering into certain transactions with affiliates. The covenants limit our ability to pay cash dividends on common stock, repurchase or redeem common or preferred equity, prepay subordinated debt, and make certain investments. There are no restrictions on dividends from a subsidiary to the parent company, nor any restrictions on distributions from the parent company to a subsidiary. Upon the occurrence of a “Change in Control Repurchase Event” (as defined in the indenture governing the notes), each holder of the Notes will have the right to require us to purchase that holder’s Notes for a cash price equal to 101% of their principal amount. Upon the occurrence of an “Event of Default” (as defined in the indenture), the trustee or the holders of the Notes may declare all of the outstanding Notes to be due and payable immediately. The Company is not aware of any instances of non-compliance with the financial covenants.

	Proceeds from our notes were approximately $493.8 million, net of fees and expenses, and were used to retire all of our $300 million of previously outstanding 8.625% Senior Notes pursuant to a tender offer, at a total cost of $329.4 million, including the tender premium and accrued interest. As a result of our repurchase of 8.625% Senior Notes in 2014, we recorded a pretax charge of $29.8 million, which consisted of $26.7 million of premium and $3.1 million of unamortized issuance costs.

	The Notes bear interest at a fixed rate and therefore changes in market interest rates do not affect our interest payment obligations on the notes. The fair market value of our Senior Notes varies as changes occur to general market interest rates, the remaining maturity of the notes, and our credit worthiness. At December 31, 2014, the fair market value of the Notes was $425.6 million, and the carrying value was $500 million. At December 31, 2013, the fair market value of our 8.625% Senior Notes due 2018 was $323.2 million and the carrying value was $300 million.

	Revolving Credit Facility – We have an amended and restated revolving credit facility that matures on October 1, 2016. Under this facility, we can borrow up to $150 million at floating interest rates based on either the London Interbank Offered Rate plus 225 basis points or the prime rate (each as defined in our amended and restated revolving credit facility), at our option. Our revolving credit facility includes usual and customary covenants and events of default for credit facilities of its type. Our ability to borrow under the credit facility is conditioned upon our continued compliance with such covenants, including, among others, (i) covenants that restrict our ability to engage in certain asset sales, mergers or other fundamental changes, to incur liens or to engage in certain other transactions or activities and (ii) financial covenants that stipulate that PHI will maintain a consolidated working capital ratio of at least 2 to 1, a funded debt to consolidated net worth ratio not greater than 1.5 to 1, a fixed charge coverage ratio of at least 1.1 to 1, and consolidated net worth of at least $450 million (with all such terms or amounts as defined in or determined under the amended and restated revolving credit facility).

	For additional information on our revolving credit facility, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital Resources – Long Term Debt” included in Part I, Item 2, of this report.

	Other – We maintain a separate letter of credit facility that had $15.5 million in letters of credit outstanding at December 31, 2014 and 2013. The letters of credit securing our workers compensation policies, in the amount of $6.3 million, are evergreen. The letter of credit securing an Air Medical traditional provider contract, in the amount of $9.2 million, expires on October 29, 2015, but may be extended at the request of the beneficiary for subsequent periods up to one year.

Income_Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	-8	INCOME TAXES

	Income tax expense (benefit) is composed of the following:



			Year Ended				Year Ended			Year Ended
			December 31,				December 31,			December 31,
			2014				2013			2012
			(Thousands of dollars)
	Current
	Federal		$	—			$	—		$	—
	State			307				353			360
	Foreign			4,352				9,637			—
	Deferred – principally Federal			15,768				21,195			15,632

	Total		$	20,427			$	31,185		$	15,992


	Income tax expense (benefit) as a percentage of pre-tax earnings varies from the effective Federal statutory rate of 35% as a result of the following:



			Year Ended							Year Ended						Year Ended
			December 31, 2014							December 31, 2013						December 31, 2012
			(Thousands of dollars, except percentage amounts)
			Amount				Tax			Amount			Tax			Amount		Tax
			Amount				Rate %			Amount			Rate %			Amount		Rate %
	Income taxes at statutory rate		$	18,590				35		$	31,550			35		$	11,917		35
	Increase (decrease) in taxes resulting from:
	Valuation allowance – foreign tax credit			113				—			—			—			1,649		5
	Change in tax rate on deferred items			—				—			(3,850	)		(4	)		—		—
	State income taxes, net of federal benefit			916				2			2,161			2			1,688		5
	Other items – net			808				1			1,324			2			738		2

	Total		$	20,427				38		$	31,185			35		$	15,992		47


	The change in tax rate on deferred items relates to the reduction in the estimated effective tax rate that will be present at the time the deferred tax assets and liabilities reverse for tax purposes. The reduction is attributable to a decline in the apportionment percentages in the various states in which we operate as a result of our expansion into international areas of operation.



	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The tax effects of significant items comprising our net deferred tax balance at December 31 are as follows:



			2014				2013
			(Thousands of dollars)
	Deferred tax assets:
	Deferred compensation		$	1,023			$	656
	Foreign tax credits			16,982				12,611
	Vacation and bonus accrual			2,031				5,931
	Inventory valuation			6,093				5,655
	Rental accrual			1,799				1,634
	Hurricane relief credit			1,255				1,255
	Stock-based compensation			2,977				1,307
	Other			2,714				2,674
	Net operating losses			56,305				55,990

	Total deferred tax assets			91,179				87,713
	Valuation allowance – state NOL carryforwards			(219	)			(541	)
	Valuation allowance – tax credit carryforwards			(2,047	)			(1,933	)
	Valuation allowance – other			(1,466	)			(1,515	)

Total deferred tax assets, net			87,447				83,724

Deferred tax liabilities:
Tax depreciation in excess of book depreciation			(218,064	)			(198,358	)

Total deferred tax liabilities			(218,064	)			(198,358	)

Net deferred tax liabilities		$	(130,617	)		$	(114,634	)

Current deferred tax assets		$	9,915			$	12,723
Deferred tax liability – long-term			(140,532	)			(127,357	)

Net deferred tax liabilities		$	(130,617	)		$	(114,634	)


As a result of certain realization requirements under GAAP, the Company’s deferred tax assets as of December 31, 2014 in the table above do not include certain deferred tax assets that arose directly from tax deductions related to equity compensation in excess of compensation recognized for financial reporting. Equity will increase by $0.5 million when the deferred tax assets are ultimately realized. The Company uses tax law ordering for purposes of determining when excess tax benefits have been realized.

The Company has U.S. Federal net operating loss carryforwards (“NOLs”) of approximately $143.4 million that, if not used, will expire beginning in 2022 through 2032. Additionally, for state income tax purposes, the Company has NOLs of approximately $126.6 million available to reduce future state taxable income. These NOLs expire in varying amounts through 2032, the majority of which expire in 2017 through 2027. The Company has a valuation allowance of $0.2 million as of December 31, 2014 against certain net operating losses in six states which are not more likely than not to be realized in future years.

During 2014, the Company reversed $0.3 million of previously recorded valuation allowances on these state NOLs.

The Company also has foreign tax credits of approximately $17.0 million which expire beginning in 2015 through 2024. The estimated future U.S. taxable income, after utilization of the available net operating loss carryforwards, will limit the ability of the Company to utilize some of the foreign tax credit carryforwards during their carry forward period and it is not more likely than not that a portion of these credits will be utilized in future years. Therefore, the Company has a valuation allowance of $2.0 million on these credits, of which of $0.1 million was recorded in 2014.

The Company files income tax returns in the U.S. federal jurisdiction and in many U.S. state jurisdictions.

The tax years 2011 to 2014 remain open to examination by the major taxing jurisdictions in which the Company is subject to tax.

Income taxes paid were approximately $9.6 million, $1.1 million, and $0.2 million for each of the years ended December 31, 2014, 2013, and 2012, respectively.

At December 31, 2014, the Company had no unrecognized tax benefits. It is the Company’s practice to recognize interest and penalties related to income tax expense as part of non-operating expenses.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
Earnings Per Share	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings Per Share	-9	EARNINGS PER SHARE
	The components of basic and diluted earnings per share for the years ended December 31, are as follows:


			2014		2013		2012
			(in thousands)
	Weighted average outstanding shares of common stock, basic			15,483		15,474		15,418
	Dilutive effect of restricted stock units			202		165		70

	Weighted average outstanding shares of common stock, diluted			15,685		15,639		15,488

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2014
Postemployment Benefits [Abstract]
Employee Benefit Plans	-10	EMPLOYEE BENEFIT PLANS

	Deferred Compensation Plan

	The Company maintains an Officer Deferred Compensation Plan that permits key officers to defer a portion of their compensation. The plan is nonqualified and funded. The Company has established a separate account for each participant, which is invested and reinvested from time to time in investments that the participant selects from a list of eligible investment choices. Earnings and losses on the book reserve accounts accrue to the plan participants. Liabilities for the plan are included in other long-term liabilities, and the corresponding investment accounts are included in other assets. Aggregate amounts deferred under the plans were $2.4 million and $2.1 million for the years ended December 31, 2014 and 2013, respectively.

	Incentive Compensation

	The Company has an incentive compensation plan for non-executive employees. The plan allows the Company to pay up to 8.25% of earnings before tax upon achieving a specified earnings threshold. The Company also has an executive/senior management plan for certain corporate and business unit management employees. Under this plan, the bonus is a percentage of each participating employee’s base salary based upon the Company’s achievement of the financial target established by the Board of Directors at three levels – a threshold level, a target level, and a stretch level, subject to a positive or negative adjustment for the Company’s safety performance. Pursuant to these plans, the Company accrued incentive compensation expense of $11.7 million, $11.5 million, and $6.0 million for the years ended December 31, 2014, 2013, and 2012, respectively. We also have a Safety Incentive Plan related to Occupational Safety and Health Administration recordable incidents, for which we expensed and paid $1.0 million, $1.0 million, and $0.9 million for the years 2014, 2013, and 2012, respectively.

	401(k) Plan

	We sponsor a 401(k) Plan (“Plan”) for our employees. An employee is eligible to participate in the Plan immediately upon employment and receive a dollar matching contribution up to 6% of his or her base compensation. The vesting for matching contributions is 25% per year beginning at the end of the second year of employment. Employees are fully vested after completing five years of service to the Company. The matching contribution for the years ended December 31, 2014, 2013, and 2012 were $11.5 million, $10.5 million, and $9.0 million, respectively.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
Stock-Based Compensation	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	-11	STOCK-BASED COMPENSATION
	Compensation expense for our stock-based plans was $4.8 million, $2.4 million, and $4.3 million for 2014, 2013, and 2012, respectively.
	1995 Incentive Plan – Under the PHI, Inc. 1995 Incentive Plan, we are authorized to issue up to 175,000 shares of voting common stock and 575,000 shares of non-voting common stock in the form of stock options, restricted stock, stock appreciation rights, performance shares, stock awards, and cash awards. As of December 31, 2014, there were 32,542 voting shares and 738 non-voting shares available for grant. Time-vested restricted stock units granted under the plan generally have forfeiture restrictions that lapse 100% after three years. There were no awards outstanding under this plan as of December 31, 2014 and December 31, 2013.
	2012 Long-Term Incentive Plan – Under the PHI Long-Term Incentive Plan (“LTIP”), we are authorized to issue up to 750,000 shares of non-voting stock. As of December 31, 2014, 163,676 shares were available for grant. Time-vested restricted stock units granted under the plan generally have forfeiture restrictions that lapse 100% after three years. Performance-based restricted stock units that have been granted under the plan, whose vesting is contingent upon meeting company-wide performance goals, have forfeiture restrictions that lapse, if at all, at the end of a three-year performance period.
	Non-Voting Time-Vested Restricted Stock Units – The following table summarizes the activity for non-voting time-vested restricted stock units granted to employees for the year ended December 31, 2014.


			Share Units			Weighted			Remaining		Aggregate Value
						Average			Average		(in thousands)
						Grant-Date			Contractual
						Fair Value			Life (in years)
	Outstanding at January 1, 2014			61,258		$	24.11			1.65	$	1,477

	Granted			142,726			43.25
	Forfeited			—			—
	Vested and released to participants			(12,329	)		(21.05	)

	Outstanding at December 31, 2014			191,655		$	38.56			2.26	$	7,391

	The weighted average grant-date fair value of time-vested restricted stock units granted during 2014 and 2013 was $43.25 and $35.09 per share, respectively. The total fair value of awards that vested in 2014 was $0.3 million. The total fair value of awards that vested in 2013 was less than $0.1 million. As of December 31, 2014, there was $4.6 million that is expected to be recognized over a weighted average period of 2.26 years.
	The following table summarizes the activity for non-voting time-vested restricted stock units granted to non-employee directors for the year ended December 31, 2014.


			Share Units			Weighted			Remaining		Aggregate Value
						Average			Average		(in thousands)
						Grant-Date			Contractual
						Fair Value			Life (in years)
	Outstanding at January 1, 2014			3,048		$	38.44			2.85	$	117

	Granted			2,202			44.04
	Forfeited			—			—
	Vested and released to participants			(762	)		(38.44	)

	Outstanding at December 31, 2014			4,488		$	41.19			2.48	$	185

	Non-Voting Performance-Based Restricted Stock Units – The following table summarizes the activity for non-voting performance-based restricted stock units for the year ended December 31, 2014.


			Share Units			Weighted			Remaining		Aggregate Value
						Average			Average		(in thousands)
						Grant-Date			Contractual
						Fair Value			Life (in years)
	Outstanding at January 1, 2014			277,026		$	24.55			3.41	$	6,812

	Granted			117,643			43.07
	Forfeited			—			—
	Vested and released to participants			—			—

	Outstanding at December 31, 2014			394,669		$	30.07			1.78	$	11,878

	The aggregate value of the awards in the above table reflects the impact of current expectations of achievement through the end of the performance cycle. As of December 31, 2014, there was a total of $5.5 million of unrecognized compensation cost related to the non-vested performance-based restricted stock units that is expected to be recognized over a weighted average period of 1.8 years.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	-12	COMMITMENTS AND CONTINGENCIES
	Operating Leases
	The Company leases certain aircraft, facilities, and equipment used in its operations. The related lease agreements, which include both non-cancelable and month-to-month terms, generally provide for fixed monthly rentals and, for certain real estate leases, renewal options. The Company generally pays all insurance, taxes, and maintenance expenses associated with these aircraft leases and some of these leases contain renewal and purchase options at fair market values. Rental expense incurred under these leases consisted of the following:


			Year Ended		Year Ended		Year Ended
			December 31,		December 31,		December 31,
			2014		2013		2012
			(Thousands of dollars)
	Aircraft		$	44,908	$	41,803	$	36,240
	Other			7,790		7,657		8,081

	Total		$	52,698	$	49,460	$	44,321

	Included in the above rental expense is $0.5 million in 2014, $0.6 million in 2013, and $0.3 million in 2012 paid to GE Air, Inc. and Gonsoulin Enterprises, Inc. for the lease of aircraft and real estate. Each of GE Air, Inc. and Gonsoulin Enterprises, Inc. is owned by our Chairman, CEO and majority voting shareholder.
	The following table presents the remaining aggregate lease commitments under operating leases having initial non-cancelable terms in excess of one year. The table includes renewal periods on the principal operating facility lease.


			Aircraft		Other		Total
			(Thousands of dollars)
	2015		$	45,379	$	3,980	$	49,359
	2016			42,885		3,163		46,048
	2017			40,595		2,352		42,947
	2018			36,914		1,759		38,673
	2019			30,262		1,198		31,460
	Thereafter			106,035		2,149		108,184

			$	302,070	$	14,601	$	316,671


	In 2014, we purchased five heavy aircraft off lease pursuant to purchase options in the lease contracts for an aggregate purchase price of $89.3 million using proceeds from the sale of short-term investments. We also purchased two medium aircraft off lease pursuant to purchase options in the lease contracts for an aggregate purchase price of $14.9 million, and purchased one fixed wing aircraft off lease for an aggregate purchase price of $3.5 million. As of December 31, 2014, we had options to purchase aircraft under lease becoming exercisable in 2015 through 2019 for the following aggregate purchase prices: $17.7 million in 2015, $67.8 million in 2016, $55.7 million in 2017, $127.0 million in 2018, and $150.4 million in 2019. Subject to market conditions, we intend to exercise these options as they become exercisable.
	On January 2, 2015, we purchased one heavy aircraft off lease pursuant to purchase options in the lease contract for an aggregate purchase price of $17.7 million.
	Guarantees
	In the normal course of business with customers, vendors, and others, we provide guarantees, performance, and payment bonds pursuant to certain agreements. The aggregate amount of these guarantees and bonds at December 31, 2014 was $1.1 million and are scheduled to expire between March 2015 and November 2015.
	Purchase Commitments
	In 2013, we executed a contract to purchase six new heavy aircraft for our Oil and Gas segment. We took delivery of these aircraft throughout 2014. In 2014, we exercised an option to purchase six additional heavy aircraft for delivery in 2015 and 2016.
	Total aircraft deposits of $8.3 million were included in Other Assets as of December 31, 2014. This amount represents deposits for aircraft purchase contracts.
	Environmental Matters
	We have recorded an aggregate estimated probable liability of $0.2 million as of December 31, 2014 for environmental response costs. We have conducted environmental surveys of our former Lafayette facility located at the Lafayette Regional Airport, which we vacated in 2001, and have determined that limited soil and groundwater contamination exists at two parcels of land at the former facility. We submitted an assessment report for both sites in 2003, updated it in 2006, and received approvals of our remediation plan from the Louisiana Department of Environmental Quality (“LDEQ”) and Louisiana Department of Natural Resources in 2010 and 2011, respectively. Since such time, we have installed groundwater monitoring wells at these sites and furnished periodic reports on contamination levels to the LDEQ. Pursuant to our agreement with the LDEQ, we are currently providing samples twice a year for both sites and plan to remove underground storage tanks under one of the sites later this year. Based upon our working relationships and agreements with the LDEQ and the results of our ongoing site monitoring, we believe, based on current circumstances, that our ultimate remediation costs for these sites will not be material to our consolidated financial position, results of operations, or cash flows.
	Legal Matters
	The Company is named as a defendant in various legal actions that have arisen in the ordinary course of business and have not been finally adjudicated. In the opinion of management, the amount of the liability with respect to these actions will not have a material effect on the Company’s consolidated financial position, results of operations, or cash flows.

Business_Segments_and_Geograph

Business Segments and Geographic Areas	12 Months Ended
Business Segments and Geographic Areas	Dec. 31, 2014
Segment Reporting [Abstract]
Business Segments and Geographic Areas	-13	BUSINESS SEGMENTS AND GEOGRAPHIC AREAS
	PHI is primarily a provider of helicopter services, including helicopter maintenance and repair services. The Company has used a combination of factors to identify its reportable segments as required by Accounting Standards Codification 280, “Segment Reporting.” The overriding determination of the Company’s segments is based on how the chief operating decision-maker of the Company, the Chairman of the Board and Chief Executive Officer, evaluates the Company’s results of operations. The underlying factors include customer bases, types of service, operational management, physical locations, and underlying economic characteristics of the types of work the Company performs.
	A segment’s operating profit is its operating revenues less its direct expenses and selling, general and administrative expenses. Each segment has a portion of selling, general and administrative expenses that is charged directly to the segment and a portion that is allocated. Direct charges represent the vast majority of segment selling, general and administrative expenses. Allocated selling, general and administrative expenses is based primarily on total segment costs as a percentage of total operating costs.
	The Oil and Gas segment provides helicopter services to oil and gas customers operating in the Gulf of Mexico and two foreign countries. The Air Medical segment provides helicopter services to hospitals and medical programs in several U.S. states, one foreign country, and individuals in which case the Company is paid by either a commercial insurance company, federal or state agency, or the patient. The Technical Services segment provides helicopter repair and overhaul services for existing flight operations customers that own their own aircraft. The Company also operates five aircraft for the National Science Foundation in Antarctica under the Technical Services segment.
	Air Medical operations are headquartered in Phoenix, Arizona, where the Company maintains significant separate facilities and administrative staff dedicated to this segment. Those costs are charged directly to the Air Medical segment, resulting in a disproportionate share of selling, general and administrative expenses compared to the Company’s other reportable segments.
	The customers, individually or considered as a group under common ownership, which accounted for greater than 10% of accounts receivable or 10% of operating revenues during the periods reflected were as follows:


			Accounts Receivable								Operating Revenues
			December 31,								Years Ended December 31,
			2014				2013				2014			2013			2012
	Oil and Gas segment:
	Customer A			7	%			7	%			17	%		15	%		15	%
	Customer B			12	%			12	%			13	%		13	%		13	%
	Air Medical &
	Technical Services segments:
	Customer C			20	%			20	%			10	%		17	%		2	%
	The following table shows information about the profit or loss and assets of each of the Company’s reportable segments for the years ended December 31, 2014, 2013, and 2012. The information contains certain allocations, including allocations of depreciation, rents, insurance, and overhead expenses that the Company deems reasonable and appropriate for the evaluation of results of operations. The Company does not allocate gains on dispositions of property and equipment, other income, interest expense, income taxes, and corporate selling, general, and administrative expenses to the segments. Where applicable, the tables present the unallocated amounts to reconcile the totals to the Company’s consolidated financial statements. Corporate assets are principally cash, short-term investments, other assets, and certain property, and equipment.


			Year Ended
			December 31,
			2014				2013				2012
			(Thousands of dollars)
	Segment operating revenues
	Oil and Gas		$	516,909			$	489,055			$	424,514
	Air Medical			300,212				277,884				211,148
	Technical Services			19,149				89,561				11,024

	Total operating revenues			836,270				856,500				646,686

	Segment direct expenses
	Oil and Gas(1)			411,679				393,251				360,400
	Air Medical			243,573				231,880				175,944
	Technical Services			14,851				88,221				8,043

	Total segment direct expenses			670,103				713,352				544,387
	Segment selling, general and administrative expenses
	Oil and Gas			4,615				4,059				3,736
	Air Medical(2)			9,801				8,875				7,300
	Technical Services			157				1				—

	Total segment selling, general and administrative expenses			14,573				12,935				11,036

	Total segment expenses			684,676				726,287				555,423

	Net segment profit
	Oil and Gas			100,615				91,745				60,378
	Air Medical			46,838				37,129				27,904
	Technical Services			4,141				1,339				2,981

	Total			151,594				130,213				91,263
	Other, net (3)			(10,539	)			15,569				334
	Unallocated selling, general and administrative expenses			(28,597	)			(26,207	)			(28,015	)
	Interest expense			(29,510	)			(29,434	)			(29,533	)
	Loss on debt extinguishment			(29,833	)			—				—

	Earnings before income taxes		$	53,115			$	90,141			$	34,049


	-1	Includes equity in loss of unconsolidated affiliate.
	-2	Includes interest expense $0.3 million for the year ended December 31, 2013.
	-3	Includes gains on disposition of property and equipment and other income.


		Year Ended
		December 31,
		2014				2013				2012
		(Thousands of dollars)
Expenditures for long-lived assets
Oil and Gas		$	119,235			$	62,934			$	115,543
Air Medical			37,317				37,728				19,516
Corporate			1,153				1,928				1,360

Total		$	157,705			$	102,590			$	136,419



		Year Ended
		December 31,
		2014				2013				2012
		(Thousands of dollars)
Depreciation and Amortization
Oil and Gas		$	29,635			$	26,653			$	24,048
Air Medical			13,067				11,395				10,208
Technical Services			493				172				83
Corporate			7,653				4,628				7,156

Total		$	50,848			$	42,848			$	41,495

Assets
Oil and Gas		$	726,008			$	643,384
Air Medical			336,510				318,345
Technical Services			7,842				8,686
Corporate			305,720				202,908

Total		$	1,376,080			$	1,173,323

The following table presents the Company’s revenues from external customers attributed to operations in the United States and foreign areas and long-lived assets in the United States and foreign areas.


		Year Ended
		December 31,
		2014				2013				2012
		(Thousands of dollars)
Operating revenues:
United States		$	747,063			$	699,298			$	618,270
International			89,207				157,202				28,416

Total		$	836,270			$	856,500			$	646,686

Long-Lived Assets:
United States		$	846,377			$	752,936
International			31,441				32,536

Total		$	877,818			$	785,472

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
Quarterly Financial Data (Unaudited)	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (Unaudited)	-14	QUARTERLY FINANCIAL DATA (UNAUDITED)
	The condensed quarterly results of operations for the years ended December 31, 2014 and 2013 (in thousands of dollars, except per share data) are as follows:


			Quarter Ended
			March 31,			June 30,			September 30,			December 31,
			2014			2014			2014			2014
			(Thousands of dollars, except per share data)
	Operating revenues, net		$	197,071		$	212,145		$	216,294		$	210,760
	Gain (loss) on disposition of assets, net			(1,073	)		(242	)		(56	)		523
	Earnings (loss) before income taxes			(8,513	)		21,700			28,277			11,651
	Net earnings (loss)			(5,321	)		13,368			17,249			7,392
	Net earnings (loss) per share
	Basic			(0.34	)		0.86			1.11			0.48
	Diluted			(0.34	)		0.85			1.1			0.47


			Quarter Ended
			March 31,			June 30,			September 30,			December 31,
			2013			2013			2013			2013
			(Thousands of dollars, except per share data)
	Operating revenues		$	178,968		$	195,543		$	200,762		$	281,227
	Gain (loss) on disposition of assets, net			25			(14,701	)		(1,399	)		(529	)
	Earnings before income taxes			14,730			32,525			24,212			18,674
	Net earnings			8,838			19,516			13,777			16,825
	Net earnings per share
	Basic			0.57			1.26			0.89			1.09
	Diluted			0.57			1.25			0.88			1.07

Variable_Interest_Entity

Variable Interest Entity	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Variable Interest Entity	-15	VARIABLE INTEREST ENTITY
	We account for our West African operations as a variable interest entity, which is defined as an entity that either (a) has insufficient equity to permit the entity to finance its operations without additional subordinated financial support or (b) has equity investors who lack the characteristics of a controlling financial interest. As of December 31, 2014, we had a 49% investment in the common stock of PHI Century Limited (“PHIC”), a Ghanaian entity. We acquired our 49% interest on May 26, 2011, PHIC’s date of incorporation. The purpose of PHIC is to provide oil and gas flight services in Ghana and the West African region. For the year ended December 31, 2014, we recorded earnings in equity of unconsolidated affiliate of $0.1 million relative to our 49% equity ownership. We had $2.8 million of Trade receivables and $0.9 million accrued liabilities as of December 31, 2014 from PHIC. For the year ended December 31, 2013, we recorded a loss in equity of unconsolidated affiliate of $0.3 million relative to our 49% equity ownership. In addition, we had $3.5 million of Trade receivables and $1.9 million accrued liabilities as of December 31, 2013 from PHIC. Our investment in the common stock of PHIC is included in Other assets on our Condensed Consolidated Balance Sheet and was $-0- million at December 31, 2014 and December 31, 2013. Included in Operating revenues for the years ended December 31, 2014 and December 31, 2013 is $3.4 million and $2.0 million of revenues from services provided to PHIC, respectively.

Condensed_Consolidating_Financ

Condensed Consolidating Financial Information - Guarantor Subsidiaries	12 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Consolidating Financial Information - Guarantor Subsidiaries	-16	CONDENSED CONSOLIDATING FINANCIAL INFORMATION – GUARANTOR SUBSIDIARIES

	Our 5.25% Senior Notes are fully and unconditionally guaranteed on a joint and several, senior basis by all of our domestic subsidiaries. All of our domestic subsidiaries are 100% owned.

	The following supplemental condensed financial information sets forth, on a consolidated basis, the balance sheet, statement of operations, statement of comprehensive income, and statement of cash flows information for PHI, Inc. (“Parent Company Only”) and the guarantor subsidiaries. The eliminating entries eliminate investments in subsidiaries, intercompany balances, and intercompany revenues and expenses. The condensed consolidating financial statements have been prepared on the same basis as the consolidated financial statements of PHI, Inc. The equity method is followed by the parent company within these condensed consolidating financials.

	The transactions reflected in due to/from affiliates, net primarily consist of centralized cash management activities between PHI, Inc. and its subsidiaries. Because these balances are treated as short-term borrowing between the Parent Company and its subsidiaries, serve as a financing and cash management tool to meet our short-term operating needs, are large, turn over quickly and are payable on demand, we present borrowings and repayments with our affiliates on a net basis within the condensed consolidating statement of cash flows. Net receivables from our affiliates are considered advances and net payables to our affiliates are considered borrowings, and both changes are presented as financing activities in the condensed consolidating statement of cash flows.



	PHI, INC. AND SUBSIDIARIES

	CONDENSED CONSOLIDATING BALANCE SHEETS

	(Thousands of dollars)



			December 31, 2014
			Parent				Guarantor			Eliminations				Consolidated
			Company				Subsidiaries (1)
			Only (issuer)
	ASSETS
	Current Assets:
	Cash		$	51			$	6,219		$	—			$	6,270
	Short-term investments			185,244				—			—				185,244
	Accounts receivable – net			98,001				82,760			—				180,761
	Intercompany receivable			—				95,399			(95,399	)			—
	Inventories of spare parts – net			65,341				8,452			—				73,793
	Prepaid expenses			7,610				1,704			—				9,314
	Deferred income taxes			9,915				—			—				9,915
	Income taxes receivable			1,068				159			—				1,227

	Total current assets			367,230				194,693			(95,399	)			466,524
	Investment in subsidiaries and others			358,080				—			(358,080	)			—
	Property and equipment, net			638,437				239,381			—				877,818
	Restricted investments			15,485				—			—				15,485
	Other assets			16,055				198			—				16,253

	Total assets		$	1,395,287			$	434,272		$	(453,479	)		$	1,376,080

	LIABILITIES AND SHAREHOLDERS’ EQUITY
	Current Liabilities:
	Accounts payable		$	22,578			$	5,122		$	—			$	27,700
	Accrued and other current liabilities			34,477				18,335			—				52,812
	Intercompany payable			95,270				—			(95,270	)			—

	Total current liabilities			152,325				23,457			(95,270	)			80,512
	Long-term debt			543,000				—			—				543,000
	Deferred income taxes and other long-term liabilities			102,894				52,606			—				155,500
	Shareholders’ Equity:
	Common stock and paid-in capital			303,082				137,647			(137,647	)			303,082
	Accumulated other comprehensive loss			(211	)			—			—				(211	)
	Retained earnings			294,197				220,562			(220,562	)			294,197

	Total shareholders’ equity			597,068				358,209			(358,209	)			597,068

	Total liabilities and shareholders’ equity		$	1,395,287			$	434,272		$	(453,479	)		$	1,376,080



	-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.



PHI, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATING BALANCE SHEETS

(Thousands of dollars)



		December 31, 2013
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only (issuer)
ASSETS
Current Assets:
Cash		$	52			$	882		$	—			$	934
Short-term investments			85,916				—			—				85,916
Accounts receivable – net			83,988				89,732			—				173,720
Intercompany receivable			129,026				—			(129,026	)			—
Inventories of spare parts – net			71,023				114			—				71,137
Prepaid expenses			6,441				1,916			—				8,357
Deferred income taxes			12,723				—			—				12,723
Income taxes receivable			1,361				510			—				1,871

Total current assets			390,530				93,154			(129,026	)			354,658
Investment in subsidiaries			112,273				—			(112,273	)			—
Property and equipment, net			579,369				206,103			—				785,472
Restricted investments			14,685				—			—				14,685
Other assets			19,111				(603	)		—				18,508

Total assets		$	1,115,968			$	298,654		$	(241,299	)		$	1,173,323

LIABILITIES AND SHAREHOLDERS’ EQUITY
Current Liabilities:
Accounts payable		$	31,232			$	5,642		$	—			$	36,874
Accrued liabilities			31,330				23,201			—				54,531
Intercompany payable			—				129,026			(129,026	)			—

Total current liabilities			62,562				157,869			(129,026	)			91,405
Long-term debt			379,000				—			—				379,000
Deferred income taxes and other long-term liabilities			114,441				28,512			—				142,953
Shareholders’ Equity:
Common stock and paid-in capital			298,480				2,674			(2,674	)			298,480
Accumulated other comprehensive loss			(24	)			—			—				(24	)
Retained earnings			261,509				109,599			(109,599	)			261,509

Total shareholders’ equity			559,965				112,273			(112,273	)			559,965

Total liabilities and shareholders’ equity		$	1,115,968			$	298,654		$	(241,299	)		$	1,173,323



-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.



PHI, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

(Thousands of dollars)



		For the year ended December 31, 2014
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only (issuer)
Operating revenues, net		$	504,180			$	332,090		$	—			$	836,270
Expenses:
Direct expenses			411,398				258,627			(18	)			670,007
Selling, general, and administrative expenses			32,985				10,186			—				43,171

Total operating expenses			444,383				268,813			(18	)			713,178
Loss on disposition of assets, net			848				—			—				848
Impairment of assets			10,508				—			—				10,508
Equity in loss of unconsolidated affiliate			96				—			—				96

Operating income			48,345				63,277			18				111,640
Equity in net earnings of consolidated subsidiaries			(38,740	)			—			38,740				—
Interest expense			29,510				—			—				29,510
Loss on debt extinguishment			29,833				—			—				29,833
Other (income) expense, net			(819	)			(17	)		18				(818	)

			19,784				(17	)		38,758				58,525

Earnings before income taxes			28,561				63,294			(38,740	)			53,115
Income tax expense (benefit)			(4,127	)			24,554			—				20,427

Net earnings		$	32,688			$	38,740		$	(38,740	)		$	32,688


		For the year ended December 31, 2013
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only (issuer)
Operating revenues, net		$	564,445			$	292,055		$	—			$	856,500
Expenses:
Direct expenses			468,321				244,769			—				713,090
Selling, general, and administrative expenses			29,885				8,935			—				38,820
Management fees			(11,682	)			11,682			—				—

Total operating expenses			486,524				265,386			—				751,910
(Gain) on disposition of assets, net			(16,585	)			(19	)		—				(16,604	)
Impairment of assets			1,227				421			—				1,648
Equity in loss of unconsolidated affiliate			262				—			—				262

Operating income			93,017				26,267			—				119,284
Equity in net earnings of consolidated subsidiaries			(15,567	)			—			15,567				—
Interest expense			29,434				322			—				29,756
Other income, net			(613	)			—			—				(613	)

			13,254				322			15,567				29,413

Earnings before income taxes			79,763				25,945			(15,567	)			90,141
Income tax expense			20,807				10,378			—				31,185

Net earnings		$	58,956			$	15,567		$	(15,567	)		$	58,956



-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.



PHI, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

(Thousands of dollars)



		For the year ended December 31, 2012
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only (issuer)
Operating revenues, net		$	415,740			$	230,946		$	—			$	646,686
Expenses:
Direct expenses			355,689				187,835			—				543,524
Selling, general, and administrative expenses			31,384				7,667			—				39,051
Management fees			(9,238	)			9,238			—				—

Total operating expenses			377,835				204,740			—				582,575
Loss on disposition of assets, net			317				—			—				317
Equity in loss of unconsolidated affiliate			863				—			—				863

Operating income			36,725				26,206			—				62,931
Equity in net earnings of consolidated subsidiaries			(15,714	)			—			15,714				—
Interest expense			29,518				15			—				29,533
Other income, net			(651	)			—			—				(651	)

			13,153				15			15,714				28,882

Earnings before income taxes			23,572				26,191			(15,714	)			34,049
Income tax expense			5,515				10,477			—				15,992

Net earnings		$	18,057			$	15,714		$	(15,714	)		$	18,057



-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.



PHI, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

(Thousands of dollars)



		For the year ended December 31, 2014
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only
Net earnings		$	32,688			$	38,740		$	(38,740	)		$	32,688
Unrealized loss on short-term investments			285				—			—				285
Other unrealized loss			24				—			—				24
Changes in pension plan assets and benefit obligations			(17	)			—			—				(17	)
Tax impact			(105	)			—			—				(105	)

		$	32,501			$	38,740		$	(38,740	)		$	32,501


		For the year ended December 31, 2013
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only
Net earnings		$	58,956			$	15,567		$	(15,567	)		$	58,956
Unrealized gain on short-term investments			44				—			—				44
Changes in pension plan assets and benefit obligations			(2	)			—			—				(2	)
Tax impact			(15	)			—			—				(15	)

		$	58,983			$	15,567		$	(15,567	)		$	58,983


		For the year ended December 31, 2012
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only
Net earnings		$	18,057			$	15,714		$	(15,714	)		$	18,057
Unrealized gain on short-term investments			92				—			—				92
Changes in pension plan assets and benefit obligations			(22	)			—			—				(22	)
Tax impact			(28	)			—			—				(28	)

		$	18,099			$	15,714		$	(15,714	)		$	18,099



-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.



PHI, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

(Thousands of dollars)



		For the year ended December 31, 2014
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only (issuer)
Net cash provided by operating activities		$	51,476			$	68,043		$	—			$	119,519
Investing activities:
Purchase of property and equipment			(157,690	)			—			—				(157,690	)
Proceeds from asset dispositions			10,266				—			—				10,266
Purchase of short-term investments			(465,094	)			—			—				(465,094	)
Proceeds from sale of short-term investments			363,110				—			—				363,110
Refund of deposits on aircraft			11,506				—			—				11,506
Payments of deposits on aircraft			(6,948	)			—			—				(6,948	)
Other			(200	)			—			—				(200	)

Net cash used in investing activities			(245,050	)			—			—				(245,050	)

Financing activities:
Proceeds from issuance of Senior Notes due 2019			500,000				—			—				500,000
Repayment of Senior Notes due 2018			(300,000	)			—			—				(300,000	)
Premium and cost to retire debt early			(26,749	)			—			—				(26,749	)
Debt issuance costs			(6,232	)			—			—				(6,232	)
Proceeds from line of credit			264,253				—			—				264,253
Payments on line of credit			(300,253	)			—			—				(300,253	)
Repurchase of common stock			(152	)			—			—				(152	)
Due to/from affiliate, net			62,706				(62,706	)		—				—

Net cash provided by financing activities			193,573				(62,706	)		—				130,867

(Decrease) increase in cash			(1	)			5,337			—				5,336
Cash, beginning of year			52				882			—				934

Cash, end of year		$	51			$	6,219		$	—			$	6,270




PHI, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

(Thousands of dollars)



		For the year ended December 31, 2013
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)(2)
		Only (issuer)
Net cash provided by operating activities		$	82,660			$	22,436		$	—			$	105,096
Investing activities:
Purchase of property and equipment			(102,726	)			—			—				(102,726	)
Proceeds from asset dispositions			42,197				—			—				42,197
Purchase of short-term investments			(375,503	)			—			—				(375,503	)
Proceeds from sale of short-term investments			338,970				—			—				338,970
Payments of deposits on aircraft			(9,318	)			—			—				(9,318	)
Refunds on deposits on aircraft			8,161				—			—				8,161

Net cash used in investing activities			(98,219	)			—			—				(98,219	)

Financing activities:
Repurchase of common stock			(1,037	)										(1,037	)
Proceeds on line of credit			164,771				—			—				164,771
Payments on line of credit			(172,526	)			—			—				(172,526	)
Due to/from affiliate, net			23,851				(23,851	)		—				—

Net cash provided by financing activities			15,059				(23,851	)		—				(8,792	)

(Decrease) increase in cash			(500	)			(1,415	)		—				(1,915	)
Cash, beginning of year			552				2,297			—				2,849

Cash, end of year		$	52			$	882		$	—			$	934


		For the year ended December 31, 2012
		Parent				Guarantor			Eliminations				Consolidated
		Company				Subsidiaries (1)(2)
		Only (issuer)
Net cash provided by operating activities		$	15,781			$	34,769		$	—			$	50,550
Investing activities:
Purchase of property and equipment			(128,475	)			—			—				(128,475	)
Proceeds from asset dispositions			11,302				—			—				11,302
Purchase of short-term investments			(216,265	)			—			—				(216,265	)
Proceeds from sale of short-term investments			249,041				—			—				249,041
Payments of deposits on aircraft			(8,717	)			—			—				(8,717	)
Refunds on deposits on aircraft			2,500				—			—				2,500
Loan to unconsolidated affiliate			(975	)			—			—				(975	)
Other			(50	)			—			—				(50	)

Net cash used in investing activities			(91,639	)			—			—				(91,639	)

Financing activities:
Repurchase of common stock			(1,861	)										(1,861	)
Proceeds on line of credit			127,323				—			—				127,323
Payments on line of credit			(86,615	)			—			—				(86,615	)
Due to/from affiliate, net			33,250				(33,250	)		—				—

Net cash provided by financing activities			72,097				(33,250	)		—				38,847

(Decrease) increase in cash			(3,761	)			1,519			—				(2,242	)
Cash, beginning of year			4,313				778			—				5,091

Cash, end of year		$	552			$	2,297		$	—			$	2,849



-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.
-2	Cash flows between the Parent Company and Guarantor Subsidiaries related to the Company’s centralized cash management activities in 2013 and 2012 have been adjusted to show the effects on net cash provided by operating and financing activities.

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Consolidated Accounts	12 Months Ended
	Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Consolidated Accounts	PHI, INC. AND SUBSIDIARIES
	Schedule II – Valuation and Qualifying Consolidated Accounts
	(Thousands of dollars)


					Additions
			Balance at		Charged to				Balance at
			Beginning		Costs and				End
	Description		of Year		Expenses		Deductions (1)		of Year
	Year ended December 31, 2014:
	Allowance for doubtful accounts		$	1,001	$	350	$	—	$	1,351
	Allowance for inventory			12,292		1,225		—		13,517
	Allowance for contractual discounts			74,711		408,362		386,483		96,590
	Allowance for uncompensated care			46,387		79,564		84,093		41,858
	Year ended December 31, 2013:
	Allowance for doubtful accounts		$	50	$	951	$	—	$	1,001
	Allowance for inventory			12,361		—		69		12,292
	Allowance for contractual discounts			50,389		312,927		288,605		74,711
	Allowance for uncompensated care			52,168		71,011		76,792		46,387
	Year ended December 31, 2012:
	Allowance for doubtful accounts		$	50	$	—	$	—	$	50
	Allowance for inventory			12,319		42		—		12,361
	Allowance for contractual discounts			39,591		258,889		248,091		50,389
	Allowance for uncompensated care			37,734		69,910		55,476		52,168

	-1	Deductions from provisions represent losses or expenses for which the respective provisions were created. In the case of the provision for contractual discounts and uncompensated care, such deductions are reduced by recoveries of amounts previously written off.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Nature of Operations, Basis of Consolidation, and Other General Principles

PHI, Inc. and its subsidiaries (“PHI”, the “Company”, “we”, “us”, or “our”) provide transportation services to, from, and among offshore facilities engaged in the oil and gas exploration, development, and production industry, which is primarily in North America and to a lesser extent in West Africa and the Middle East. We also provide air medical transportation services for hospitals and medical programs as well as aircraft maintenance services to third parties in North America and the Middle East.

The consolidated financial statements include the accounts of PHI, Inc. and its subsidiaries after the elimination of all intercompany accounts and transactions. We apply the equity method of accounting for investments in entities, if we have the ability to exercise significant influence over the operating and financial policies of the entity. We report our share of earnings or losses of equity investees in the accompanying Consolidated Statements of Operations as equity in earnings (loss) of unconsolidated affiliates.

At December 31, 2014, Al A. Gonsoulin, Chairman of the Board and Chief Executive Officer, beneficially owned stock representing approximately 69.5% of the total voting power. As a result, he exercises control over the election of PHI’s directors and the outcome of matters requiring a shareholder vote.

Use of Estimates

The preparation of financial statements is in conformity with accounting principles generally accepted in the United States of America (“GAAP”), which requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Significant estimates include:

Estimates of contractual allowances applicable to billings in the Air Medical segment,

Inventories of spare parts,

Valuation reserve related to obsolete and excess inventory,

Reserves related to unpaid Oil and Gas segment accounts,

Depreciable lives and salvage values of property and equipment,

Valuation allowance for deferred tax assets,

Income taxes,

Health care insurance claims and workers’ compensation liability, and

Impairment of long-lived assets.

Cash and Cash Equivalents

We consider all highly liquid investments with maturities of three months or less, when purchased, to be cash equivalents.

Trade Receivables, net

Trade and other receivables are stated at net realizable value. Air Medical trade receivables are presented net of allowances for contractual discounts and uncompensated care. Contractual allowances and uncompensated care are estimated based on historical collection experience by payor category. The main payor categories are Medicare, Medicaid, Insurance, and Self-Pay. We analyze our historical payment of accounts by payor category on a monthly basis, and adjust our accounts receivable allowance based upon each category’s historical collection percentage.

Provisions for contractual discounts and uncompensated care that we applied to our Air Medical trade receivables (expressed as a percentage of total segment billings) at December 31 are as follows:

2014

2013

Allowance for contractual discounts

Allowance for uncompensated care

Short-term Investments

Short-term investments consist of money market funds, commercial paper, debt issued by the U.S. government or its agencies, and corporate bonds and notes, which represent funds available for current operations. In accordance with GAAP, these short-term investments are classified as available for sale. The Company recorded less than $0.3 million in net unrealized losses in 2014. These losses are reflected as a separate component of stockholders’ equity.

Inventories of Spare Parts

The Company’s inventories are stated at average cost and consist primarily of spare parts. Portions of the Company’s inventories are used parts that are often exchanged with parts removed from aircraft, reworked to a useable condition according to manufacturers’ and FAA specifications, and returned to inventory. Reusable aircraft parts are included in inventory at the average cost of comparable parts. The rework costs are expensed as incurred. The Company also records an allowance for obsolete and slow-moving parts, relying principally on specific identification of such inventory. Valuation reserves related to obsolescence and slow-moving inventory were $13.5 million and $12.3 million at December 31, 2014 and 2013, respectively.

Property and Equipment

The Company records its property and equipment at cost less accumulated depreciation. For financial reporting purposes, the Company uses the straight-line method to compute depreciation based upon estimated useful lives of five to fifteen years for flight equipment and three to ten years for other equipment. Leasehold improvements are amortized over the shorter of the life of the respective asset or the term of the lease agreement and range from six to ten years. The salvage value used in calculating depreciation of aircraft ranges from 25% to 54%, and is based on sale proceeds to carrying value for aircraft sales (historical as of 2007). The cost of scheduled inspections and modifications for flight equipment are charged to maintenance expense as incurred. We charge maintenance and repair costs to earnings as the costs are incurred. The cost of certain aircraft components are covered under a contractual arrangement with the manufacturer, commonly referred to as “power-by-the-hour” contracts. Under these agreements, we are charged an agreed amount per hour of flying time. The costs charged under these contractual arrangements are recognized in the period in which the flight hours occur. To the extent that we have not yet been billed for costs incurred under these arrangements, these costs are included in accrued expenses on our consolidated balance sheets. Modifications that enhance the operating performance or extend the useful lives of the aircraft are capitalized and depreciated over the remaining life of the asset. Upon selling or otherwise disposing of property and equipment, the Company removes the cost and accumulated depreciation from the accounts and reflects any resulting gain or loss in earnings at the time of sale or other disposition.

The Company reviews its long-lived assets and certain identifiable intangibles for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The Company measures recoverability of assets to be held and used by comparing the carrying amount of an asset to future undiscounted net cash flows that it expects the asset to generate. When an asset is determined to be impaired, the Company recognizes that impairment amount, which is measured by the amount that the carrying value of the asset exceeds its fair value. Similarly, the Company reports assets that it expects to sell at the lower of the carrying amount or fair value less costs to sell.

During the twelve months ended December 31, 2014, we sold nine light and three fixed wing aircraft previously utilized in our Oil and Gas segment. The carrying value prior to the sale was $5.5 million. These assets were sold for $5.9 million, which resulted in a gain of $0.4 million. We also sold or disposed of one medium and four light aircraft previously utilized in our Air Medical segment. The carrying value prior to the sale was $10.8 million. These assets were sold for $8.2 million, resulting in a loss of $2.6 million. These aircraft no longer met our strategic needs. Sales and disposals of various ancillary equipment resulted in a gain of $1.4 million.

During the third quarter of 2013, we sold one light aircraft previously utilized in our Oil and Gas segment and miscellaneous equipment with a carrying value of $1.2 million. Cash proceeds totaled $2.6 million, resulting in a gain on the sale of these assets of $1.4 million. During the twelve months ended December 31, 2013, we also sold two heavy aircraft previously utilized in our Oil and Gas segment. The carrying value prior to the sale was $20.6 million. These assets were sold for $37.0 million, resulting in a gain of $16.4 million recorded in the second quarter of 2013. These aircraft no longer met our strategic needs. In addition, we sold an airframe to a charitable organization, which resulted in a loss of $1.7 million in the second quarter of 2013.

Deferred Financing Costs

Costs of obtaining long-term debt financing are deferred and amortized ratably over the term of the related debt agreement.

Self-Insurance

The Company maintains a self-insurance program for a portion of its health care costs. Self-insurance costs are accrued based upon the aggregate of the liability for reported claims and the estimated liability for claims incurred but not reported. The Company’s insurance retention was $250,000 per claim through December 31, 2014. As of December 31, 2014 and 2013, the Company had $1.7 million and $1.5 million, respectively, of accrued liabilities related to health care claims.

There is also a $0.5 million deductible per incident on our workers’ compensation program. We have accrued $2.5 million and $2.9 million for the years 2014 and 2013, respectively, related to workers’ compensation claims.

The Company owns an offshore insurance company to realize savings in reinsurance costs on its insurance premiums. Amounts paid to this captive company in 2014 and 2013 totaled $0.9 million and $0.8 million, respectively. The results of the captive are fully consolidated in the accompanying consolidated financial statements.

Revenue Recognition

The Company recognizes revenue related to aviation transportation services after the services are performed or the contractual obligations are met. Aircraft maintenance services revenues are recognized at the time the repair or services work is completed. Revenues related to the Company’s Air Medical segment independent provider model services are recorded net of contractual allowances under agreements with third party payors, and also recorded net of uncompensated care allowances when the services are provided. Revenues generated under the hospital based model consist of a fixed monthly rate for aircraft availability and an hourly rate for flight time. We estimate contractual allowances and uncompensated care based on historical collection experience by payor category. The main payor categories are Medicaid, Medicare, Insurance, and Self-Pay. Changes in payor mix, reimbursement rates and uncompensated care rates are the factors most subject to sensitivity and variability in calculating our allowances. We compute a historical payment analysis of accounts by category. The allowance percentages calculated are applied to the payor categories, and the necessary adjustments are made to the revenue allowance. The allowance for contractual discounts was $96.6 million, $74.7 million, and $54.6 million as of December 31, 2014, 2013, and 2012, respectively. The allowance for uncompensated care was $41.9 million, $46.4 million, and $48.0 million as of December 31, 2014, 2013, and 2012, respectively. Included in the allowance for uncompensated care above is the value of services to patients who are unable to pay when it is determined that they qualify as charity care. The value of these services was $9.1 million, $7.9 million, and $6.2 million for the years ended December 31, 2014, 2013, and 2012, respectively. The estimated cost of providing charity services was $2.1 million, $3.0 million, and $2.2 million for the years ended December 31, 2014, 2013, and 2012, respectively. The estimated costs of providing charity services are based on a calculation that applies a ratio of costs to the charges for uncompensated charity care. The ratio of costs to charges is based on the Air Medical segment’s total expenses divided by gross patient service revenue.

In determining the allowance estimates for our Air Medical segment’s billing, receivables and revenue, we utilize the prior twelve months’ payment history by each individual payor group and also the payment history evaluated on a state by state basis. A percentage of amounts collected compared to the total invoice is determined from this process and applied to the current month’s billings and receivables. If a receivable related to the self-pay category is outstanding nine months or greater, we record a reserve equal to 100% of the receivable. Other payor categories are scrutinized when they are outstanding for a nine month period and additional allowances are recorded if warranted.

Provisions for contractual discounts and estimated uncompensated care that we applied to our Air Medical revenues (expressed as a percentage of total segment billings) were as follows:

Revenue

Year Ended December 31,

2014

2013

2012

Provision for contractual discounts

Provision for uncompensated care

Amounts attributable to Medicaid, Medicare, Insurance, and Self Pay as a percentage of net Air Medical revenues are as follows:

Year Ended December 31,

2014

2013

2012

Insurance

Medicare

Medicaid

Self-Pay

Our Air Medical contract in the Middle East requires us to provide multiple products and services, including helicopter leasing, flight services for helicopter emergency medical service operations, aircraft maintenance, provision of spare parts and insurance coverage for the customer-owned aircraft, training services, and base construction. All services are delivered and earned monthly over a three year contractual period which began on September 29, 2012. The customer may terminate the contract prior to the end of the contract term by giving ninety days advance notice and paying an early termination fee of $13.5 million. Each of the major deliverables mentioned above qualify as separate units of accounting under the accounting guidance for such arrangements. The selling price for each product or service was determined based upon third-party evidence and estimates.

Income Taxes

Income taxes are accounted for in accordance with the provisions of Accounting Standards Codification 740, Income Taxes. The Company provides for income taxes using the asset and liability method under which deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. The deferred tax assets and liabilities measurement uses enacted tax rates that are expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The Company recognizes the effect of any tax rate changes in income of the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized.

Earnings per Share

Basic earnings per share is computed by dividing earnings (loss) during the period by the weighted average number of voting and non-voting shares outstanding during each period. Diluted earnings per share is computed by dividing net income (loss) during the period by the weighted average number of shares of common stock that would have been outstanding assuming the issuance of potentially dilutive shares of common stock as if such shares were outstanding during the reporting period, net of shares to be repurchased using the treasury stock method. Dilutive shares for this purpose assumes restricted stock unit awards have vested.

Concentration of Credit Risk

Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of trade accounts receivable. The Company does not believe significant credit risk exists with respect to these trade accounts receivable at December 31, 2014.

PHI conducts a majority of its business with major and independent oil and gas exploration and production companies with operations in the Gulf of Mexico. The Company also provides services to major medical centers and U.S. governmental agencies. The Company continually evaluates the financial strength of its customers, but generally does not require collateral to secure its customer receivables. The Company establishes an allowance for doubtful accounts based upon factors surrounding the credit risk of specific customers, current market conditions, and other information. Amounts are charged off as uncollectible when collection efforts have been exhausted. The allowance for doubtful accounts in the Oil and Gas and Technical Services segments was $0.1 million at December 31, 2014 and 2013. The Company’s two largest oil and gas customers accounted for 30% of consolidated operating revenues for the year ended December 31, 2014, 28% for the year ended December 31, 2013, and 28% for the year ended December 31, 2012. The Company also carried accounts receivable from these same customers totaling 18% and 19% of net trade receivables on December 31, 2014 and 2013, respectively. The Company’s largest Air Medical customer accounted for 10% and 17% of consolidated operating revenues for the years ended December 31, 2014 and 2013, respectively. The Company also carried accounts receivable from this customer totaling 20% of net trade receivables on December 31, 2014 and 2013.

Trade receivables representing amounts due pursuant to air medical independent provider model services are carried net of an allowance for estimated contractual adjustments and uncompensated care on unsettled invoices. The Company monitors its collection experience by payor category within the Air Medical segment and updates its estimated collections to be realized as deemed necessary. The allowance for contractual discounts was $96.6 million, $74.7 million, and $54.6 million as of December 31, 2014, 2013, and 2012, respectively. The allowance for uncompensated care was $41.9 million, $46.4 million, and $48.0 million as of December 31, 2014, 2013, and 2012, respectively.

Substantially all of the Company’s cash is maintained in one financial institution in amounts that typically exceed federally insured limits. The Company has not experienced any losses in such accounts and based on current circumstances does not believe that it is exposed to significant credit risk.

New Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers, which provides a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and will supersede most current revenue recognition guidance. The standard is effective for public entities for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted. The effects of this standard on our financial position, results of operations and cash flows are not yet known.

In August 2014, the FASB issued ASU 2014-15 Presentation of Financial Statements – Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. ASU 2014-15 requires management to assess the entity’s ability to continue as a going concern, and to provide related disclosures in certain circumstances. ASU 2014-15 is effective for annual and interim periods beginning after December 15, 2016. The company believes that the impact of the implementation of this new guidance on its consolidated financial statements and disclosures will not be significant.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
Summary of Significant Accounting Policies (Tables)	Dec. 31, 2014
Accounting Policies [Abstract]
Provisions for Contractual Discounts and Uncompensated Care Applied to Air Medical Trade Receivables Expressed as Percentage of Total Segment Billings	Provisions for contractual discounts and uncompensated care that we applied to our Air Medical trade receivables (expressed as a percentage of total segment billings) at December 31 are as follows:


		2014			2013
	Allowance for contractual discounts		53	%		44	%
	Allowance for uncompensated care		23	%		27	%
Schedule of Provisions for Contractual Discounts and Estimated Uncompensated Care Applied to Air Medical Revenues Expressed as Percentage of Total Segment Billings	Provisions for contractual discounts and estimated uncompensated care that we applied to our Air Medical revenues (expressed as a percentage of total segment billings) were as follows:


		Revenue
		Year Ended December 31,
		2014			2013			2012
	Provision for contractual discounts		72	%		60	%		56	%
	Provision for uncompensated care		2	%		10	%		11	%
Schedule of Net Revenue Attributable to Medicaid, Medicare, Insurance and Self Pay as a Percentage of Net Air Medical Revenues	Amounts attributable to Medicaid, Medicare, Insurance, and Self Pay as a percentage of net Air Medical revenues are as follows:


		Year Ended December 31,
		2014			2013			2012
	Insurance		74	%		73	%		69	%
	Medicare		18	%		19	%		21	%
	Medicaid		8	%		7	%		9	%
	Self-Pay		0	%		1	%		1	%

Investments_Tables

Investments (Tables)	12 Months Ended
Investments (Tables)	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Components of Investments	Investments consisted of the following as of December 31, 2014:


				Unrealized			Unrealized			Fair
		Cost Basis		Gains			Losses			Value
		(Thousands of dollars)
	Investments:
	Money Market Mutual Funds	$	68,612	$	—		$	—		$	68,612
	Municipal bonds and notes		1,500		2			—			1,502
	Corporate bonds and notes		130,864		19			(268	)		130,615

	Subtotal		200,976		21			(268	)		200,729
	Deferred compensation plan assets included in other assets		2,386		—			—			2,386

	Total	$	203,362	$	21		$	(268	)	$	203,115

	Investments consisted of the following as of December 31, 2013:


				Unrealized			Unrealized			Fair
		Cost Basis		Gains			Losses			Value
		(Thousands of dollars)
	Investments:
	Money Market Mutual Funds	$	18,470	$	—		$	—		$	18,470
	Commercial Paper		2,999		—			—			2,999
	Municipal bonds and notes		1,500		—			(1	)		1,499
	Corporate bonds and notes		77,595		67			(29	)		77,633

	Subtotal		100,564		67			(30	)		100,601
	Deferred compensation plan assets included in other assets		2,109		—			—			2,109

	Total	$	102,673	$	67		$	(30	)	$	102,710

Cost and Fair Value of Debt Investments Based on Maturities	The following table presents the cost and fair value of our debt investments based on maturities as of December 31,


		2014					2013
		Amortized		Fair			Amortized			Fair
		Costs		Value			Costs			Value
		(Thousands of dollars)
	Due in one year or less	$	70,180	$	70,169		$	32,536		$	32,538
	Due within two years		62,184		61,948			49,558			49,593

	Total	$	132,364	$	132,117		$	82,094		$	82,131

Average Coupon Rate Percentage and Average Days to Maturity of Debt	The following table presents the average coupon rate percentage and the average days to maturity of our debt investments as of December 31,


		2014					2013
		Average		Average			Average			Average
		Coupon		Days To			Coupon			Days To
		Rate (%)		Maturity			Rate (%)			Maturity
	Commercial Paper		0		0			0.15			86
	Municipal bonds and notes		0.528		134			0.528			499
	Corporate bonds and notes		1.828		348			2.134			390
Investments in Continuous Unrealized Loss Position for Less Than Twelve Months	The following table presents the fair value and unrealized losses related to our investments that have been in a continuous unrealized loss position for less than twelve months as of December 31,


		2014					2013
				Unrealized						Unrealized
		Fair Value		Losses			Fair Value			Losses
		(Thousands of dollars)
	Commercial Paper	$	—	$	—		$	—		$	—
	Municipal bonds and notes		—		—			1,499			(1	)
	Corporate bonds and notes		100,071		(268	)		34,772			(29	)

	Total	$	100,071	$	(268	)	$	36,271		$	(30	)

Fair_Value_Tables

Fair Value (Tables)	12 Months Ended
Fair Value (Tables)	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Summary of Valuation of Investments and Financial Instruments Pricing Levels	The following tables summarize the valuation of our investments and financial instruments by the above pricing levels as of the valuation dates listed:


				December 31, 2014
		Total		(Level 1)		(Level 2)
	Investments:
	Money Market Mutual Funds	$	68,612	$	68,612	$	—
	Municipal bonds and notes		1,502		—		1,502
	Corporate bonds and notes		130,615		—		130,615

			200,729		68,612		132,117
	Deferred compensation plan assets		2,386		2,386		—

	Total	$	203,115	$	70,998	$	132,117



				December 31, 2013
		Total		(Level 1)		(Level 2)
	Investments:
	Money Market Mutual Funds	$	18,470	$	18,470	$	—
	Commercial Paper		2,999		—		2,999
	Municipal bonds and notes		1,499		—		1,499
	Corporate bonds and notes		77,633		—		77,633

			100,601		18,470		82,131
	Deferred compensation plan assets		2,109		2,109		—

	Total	$	102,710	$	20,579	$	82,131

Summary of Combined Fair Value of Assets that Incurred Impairments	The below table summarizes the combined fair value of the assets that incurred impairments during the years ended December 31, 2014 and 2013, along with the amount of the impairment. The impairment charges were recorded in Impairment of assets.



		Year Ended December 31,
		2014		2013
		(Thousands of dollars)
	Amount of impairment incurred	$	10,508	$	1,648
	Combined fair value of assets incurring impairment	$	6,000	$	2,400

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
Property and Equipment (Tables)	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Summary of Company's Property and Equipment	The following table summarizes the Company’s property and equipment at December 31.


		2014			2013
		(Thousands of dollars)
	Flight equipment	$	1,053,640		$	959,986
	Facility & improvements		61,246			57,723
	Operating equipment		24,764			24,594
	Data processing equipment		32,374			33,870
	Vehicles		8,133			7,867
	Medical equipment		7,377			7,079
	Other		5,332			4,898

			1,192,866			1,096,017
	Less accumulated depreciation and amortization		(315,048	)		(310,545	)

	Property and equipment, net	$	877,818		$	785,472

Other_Assets_Tables

Other Assets (Tables)	12 Months Ended
Other Assets (Tables)	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Company's Other Assets	The following table summarizes the Company’s other assets at December 31.


		2014		2013
		(Thousands of dollars)
	Deposits on future purchases of aircraft	$	8,305	$	12,863
	Deferred financing cost		5,246		3,196
	Investments (Officers’ Deferred Compensation Plan)		2,386		2,109
	Other		316		340

	Total	$	16,253	$	18,508

Accrued_and_Other_Current_Liab1

Accrued and Other Current Liabilities (Tables)	12 Months Ended
Accrued and Other Current Liabilities (Tables)	Dec. 31, 2014
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	Accrued and other current liabilities as of December 31 consisted of the following:


		2014		2013
		(Thousands of dollars)
	Salaries & wages	$	16,203	$	14,318
	Incentive compensation		11,730		11,617
	Income taxes		3,787		6,790
	Interest		7,891		5,621
	Vacation payable		6,112		5,751
	Group medical		1,735		1,516
	Transportations tax		907		1,975
	Operating lease		1,227		1,048
	Workers compensation		1,185		3,684
	Other		2,035		2,211

	Total accrued liabilities	$	52,812	$	54,531

LongTerm_Debt_Tables

Long-Term Debt (Tables)	12 Months Ended
Long-Term Debt (Tables)	Dec. 31, 2014
Debt Disclosure [Abstract]
Components of Long-term Debt	The components of long-term debt as of December 31 are as follows:



		2014		2013
		(Thousands of dollars)
	Senior Notes issued March 17, 2014, interest only payable semi-annually at 5.25%, maturing March 15, 2019	$	500,000	$	—
	Senior Notes issued September 23, 2010, interest only payable semi-annually at 8.625% maturing October 15, 2018		—		300,000
	Revolving Credit Facility due October 1, 2016 with a group of commercial banks, interest payable at variable rates		43,000		79,000

	Total long-term debt	$	543,000	$	379,000

Summary of Annual Maturities of Long-term Debt	Annual maturities of long-term debt for each of the five years following December 31, 2014 and in total thereafter follow (in thousands):


	2015	$	—
	2016		43,000
	2017		—
	2018		—
	2019		500,000
	Thereafter		—

	Total	$	543,000

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Income Tax Expense (Benefit)	Income tax expense (benefit) is composed of the following:


		Year Ended			Year Ended			Year Ended
		December 31,			December 31,			December 31,
		2014			2013			2012
		(Thousands of dollars)
	Current
	Federal	$	—		$	—		$	—
	State		307			353			360
	Foreign		4,352			9,637			—
	Deferred – principally Federal		15,768			21,195			15,632

	Total	$	20,427		$	31,185		$	15,992

Schedule of Income Tax Expense (Benefit) as Percentage of Pre-Tax Earnings	Income tax expense (benefit) as a percentage of pre-tax earnings varies from the effective Federal statutory rate of 35% as a result of the following:



		Year Ended						Year Ended						Year Ended
		December 31, 2014						December 31, 2013						December 31, 2012
		(Thousands of dollars, except percentage amounts)
		Amount			Tax			Amount			Tax			Amount		Tax
		Amount			Rate %			Amount			Rate %			Amount		Rate %
	Income taxes at statutory rate	$	18,590			35		$	31,550			35		$	11,917		35
	Increase (decrease) in taxes resulting from:
	Valuation allowance – foreign tax credit		113			—			—			—			1,649		5
	Change in tax rate on deferred items		—			—			(3,850	)		(4	)		—		—
	State income taxes, net of federal benefit		916			2			2,161			2			1,688		5
	Other items – net		808			1			1,324			2			738		2

	Total	$	20,427			38		$	31,185			35		$	15,992		47

Schedule of Tax Effects of Temporary Differences that Give Rise to Significant Portions of Deferred Tax Assets and Deferred Tax Liabilities	The tax effects of significant items comprising our net deferred tax balance at December 31 are as follows:



		2014			2013
		(Thousands of dollars)
	Deferred tax assets:
	Deferred compensation	$	1,023		$	656
	Foreign tax credits		16,982			12,611
	Vacation and bonus accrual		2,031			5,931
	Inventory valuation		6,093			5,655
	Rental accrual		1,799			1,634
	Hurricane relief credit		1,255			1,255
	Stock-based compensation		2,977			1,307
	Other		2,714			2,674
	Net operating losses		56,305			55,990

	Total deferred tax assets		91,179			87,713
	Valuation allowance – state NOL carryforwards		(219	)		(541	)
	Valuation allowance – tax credit carryforwards		(2,047	)		(1,933	)
	Valuation allowance – other		(1,466	)		(1,515	)

	Total deferred tax assets, net		87,447			83,724

	Deferred tax liabilities:
	Tax depreciation in excess of book depreciation		(218,064	)		(198,358	)

	Total deferred tax liabilities		(218,064	)		(198,358	)

	Net deferred tax liabilities	$	(130,617	)	$	(114,634	)

	Current deferred tax assets	$	9,915		$	12,723
	Deferred tax liability – long-term		(140,532	)		(127,357	)

	Net deferred tax liabilities	$	(130,617	)	$	(114,634	)

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
Earnings Per Share (Tables)	Dec. 31, 2014
Earnings Per Share [Abstract]
Components of Basic and Diluted Earnings Per Share	The components of basic and diluted earnings per share for the years ended December 31, are as follows:


		2014		2013		2012
		(in thousands)
	Weighted average outstanding shares of common stock, basic		15,483		15,474		15,418
	Dilutive effect of restricted stock units		202		165		70

	Weighted average outstanding shares of common stock, diluted		15,685		15,639		15,488

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
Stock-Based Compensation (Tables)	Dec. 31, 2014
Summary of Activity for Non-voting Time-vested Restricted Stock	The following table summarizes the activity for non-voting time-vested restricted stock units granted to non-employee directors for the year ended December 31, 2014.


		Share Units			Weighted			Remaining		Aggregate Value
					Average			Average		(in thousands)
					Grant-Date			Contractual
					Fair Value			Life (in years)
	Outstanding at January 1, 2014		3,048		$	38.44			2.85	$	117

	Granted		2,202			44.04
	Forfeited		—			—
	Vested and released to participants		(762	)		(38.44	)

	Outstanding at December 31, 2014		4,488		$	41.19			2.48	$	185

Non-Voting Time-Vested Restricted Stock Units [Member]
Summary of Activity for Non-voting Time-vested Restricted Stock	The following table summarizes the activity for non-voting time-vested restricted stock units granted to employees for the year ended December 31, 2014.


		Share Units			Weighted			Remaining		Aggregate Value
					Average			Average		(in thousands)
					Grant-Date			Contractual
					Fair Value			Life (in years)
	Outstanding at January 1, 2014		61,258		$	24.11			1.65	$	1,477

	Granted		142,726			43.25
	Forfeited		—			—
	Vested and released to participants		(12,329	)		(21.05	)

	Outstanding at December 31, 2014		191,655		$	38.56			2.26	$	7,391

Non-Voting Performance Units [Member]
Summary of Activity for Non-voting Time-vested Restricted Stock	The following table summarizes the activity for non-voting performance-based restricted stock units for the year ended December 31, 2014.


		Share Units			Weighted			Remaining		Aggregate Value
					Average			Average		(in thousands)
					Grant-Date			Contractual
					Fair Value			Life (in years)
	Outstanding at January 1, 2014		277,026		$	24.55			3.41	$	6,812

	Granted		117,643			43.07
	Forfeited		—			—
	Vested and released to participants		—			—

	Outstanding at December 31, 2014		394,669		$	30.07			1.78	$	11,878

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Summary of Rental Expense Incurred under Leases	Rental expense incurred under these leases consisted of the following:


		Year Ended		Year Ended		Year Ended
		December 31,		December 31,		December 31,
		2014		2013		2012
		(Thousands of dollars)
	Aircraft	$	44,908	$	41,803	$	36,240
	Other		7,790		7,657		8,081

	Total	$	52,698	$	49,460	$	44,321

Summary of Remaining Aggregate Lease Commitments Under Operating Leases Having Initial Non-Cancelable Terms in Excess of One Year	The table includes renewal periods on the principal operating facility lease.


		Aircraft		Other		Total
		(Thousands of dollars)
	2015	$	45,379	$	3,980	$	49,359
	2016		42,885		3,163		46,048
	2017		40,595		2,352		42,947
	2018		36,914		1,759		38,673
	2019		30,262		1,198		31,460
	Thereafter		106,035		2,149		108,184

		$	302,070	$	14,601	$	316,671

Business_Segments_and_Geograph1

Business Segments and Geographic Areas (Tables)	12 Months Ended
Business Segments and Geographic Areas (Tables)	Dec. 31, 2014
Segment Reporting [Abstract]
Schedule of Accounts Receivable and Revenue by Major Customers by Reporting Segments	The customers, individually or considered as a group under common ownership, which accounted for greater than 10% of accounts receivable or 10% of operating revenues during the periods reflected were as follows:


			Accounts Receivable						Operating Revenues
			December 31,						Years Ended December 31,
			2014			2013			2014			2013			2012
	Oil and Gas segment:
	Customer A			7	%		7	%		17	%		15	%		15	%
	Customer B			12	%		12	%		13	%		13	%		13	%
	Air Medical &
	Technical Services segments:
	Customer C			20	%		20	%		10	%		17	%		2	%
Schedule of Profit or Loss and Assets of Each of Company's Reportable Segments	The following table shows information about the profit or loss and assets of each of the Company’s reportable segments for the years ended December 31, 2014, 2013, and 2012.


			Year Ended
			December 31,
			2014			2013			2012
			(Thousands of dollars)
	Segment operating revenues
	Oil and Gas		$	516,909		$	489,055		$	424,514
	Air Medical			300,212			277,884			211,148
	Technical Services			19,149			89,561			11,024

	Total operating revenues			836,270			856,500			646,686

	Segment direct expenses
	Oil and Gas(1)			411,679			393,251			360,400
	Air Medical			243,573			231,880			175,944
	Technical Services			14,851			88,221			8,043

	Total segment direct expenses			670,103			713,352			544,387
	Segment selling, general and administrative expenses
	Oil and Gas			4,615			4,059			3,736
	Air Medical(2)			9,801			8,875			7,300
	Technical Services			157			1			—

	Total segment selling, general and administrative expenses			14,573			12,935			11,036

	Total segment expenses			684,676			726,287			555,423

	Net segment profit
	Oil and Gas			100,615			91,745			60,378
	Air Medical			46,838			37,129			27,904
	Technical Services			4,141			1,339			2,981

	Total			151,594			130,213			91,263
	Other, net (3)			(10,539	)		15,569			334
	Unallocated selling, general and administrative expenses			(28,597	)		(26,207	)		(28,015	)
	Interest expense			(29,510	)		(29,434	)		(29,533	)
	Loss on debt extinguishment			(29,833	)		—			—

	Earnings before income taxes		$	53,115		$	90,141		$	34,049


	-1	Includes equity in loss of unconsolidated affiliate.
	-2	Includes interest expense $0.3 million for the year ended December 31, 2013.
	-3	Includes gains on disposition of property and equipment and other income.
Summary of Gains on Disposition of Property and Equipment and Other Income
			Year Ended
			December 31,
			2014			2013			2012
			(Thousands of dollars)
	Expenditures for long-lived assets
	Oil and Gas		$	119,235		$	62,934		$	115,543
	Air Medical			37,317			37,728			19,516
	Corporate			1,153			1,928			1,360

	Total		$	157,705		$	102,590		$	136,419



			Year Ended
			December 31,
			2014			2013			2012
			(Thousands of dollars)
	Depreciation and Amortization
	Oil and Gas		$	29,635		$	26,653		$	24,048
	Air Medical			13,067			11,395			10,208
	Technical Services			493			172			83
	Corporate			7,653			4,628			7,156

	Total		$	50,848		$	42,848		$	41,495

	Assets
	Oil and Gas		$	726,008		$	643,384
	Air Medical			336,510			318,345
	Technical Services			7,842			8,686
	Corporate			305,720			202,908

	Total		$	1,376,080		$	1,173,323

Summary of Company's Revenues from External Customers and Long-Lived Assets, by Geographical Areas	The following table presents the Company’s revenues from external customers attributed to operations in the United States and foreign areas and long-lived assets in the United States and foreign areas.


			Year Ended
			December 31,
			2014			2013			2012
			(Thousands of dollars)
	Operating revenues:
	United States		$	747,063		$	699,298		$	618,270
	International			89,207			157,202			28,416

	Total		$	836,270		$	856,500		$	646,686

	Long-Lived Assets:
	United States		$	846,377		$	752,936
	International			31,441			32,536

	Total		$	877,818		$	785,472

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
Quarterly Financial Data (Unaudited) (Tables)	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Summary of Condensed Quarterly Results of Operations	The condensed quarterly results of operations for the years ended December 31, 2014 and 2013 (in thousands of dollars, except per share data) are as follows:


		Quarter Ended
		March 31,			June 30,			September 30,			December 31,
		2014			2014			2014			2014
		(Thousands of dollars, except per share data)
	Operating revenues, net	$	197,071		$	212,145		$	216,294		$	210,760
	Gain (loss) on disposition of assets, net		(1,073	)		(242	)		(56	)		523
	Earnings (loss) before income taxes		(8,513	)		21,700			28,277			11,651
	Net earnings (loss)		(5,321	)		13,368			17,249			7,392
	Net earnings (loss) per share
	Basic		(0.34	)		0.86			1.11			0.48
	Diluted		(0.34	)		0.85			1.1			0.47


		Quarter Ended
		March 31,			June 30,			September 30,			December 31,
		2013			2013			2013			2013
		(Thousands of dollars, except per share data)
	Operating revenues	$	178,968		$	195,543		$	200,762		$	281,227
	Gain (loss) on disposition of assets, net		25			(14,701	)		(1,399	)		(529	)
	Earnings before income taxes		14,730			32,525			24,212			18,674
	Net earnings		8,838			19,516			13,777			16,825
	Net earnings per share
	Basic		0.57			1.26			0.89			1.09
	Diluted		0.57			1.25			0.88			1.07

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Information - Guarantor Subsidiaries (Tables)	12 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Consolidating Balance Sheets	PHI, INC. AND SUBSIDIARIES

	CONDENSED CONSOLIDATING BALANCE SHEETS

	(Thousands of dollars)



			December 31, 2014
			Parent				Guarantor				Eliminations				Consolidated
			Company				Subsidiaries (1)
			Only (issuer)
	ASSETS
	Current Assets:
	Cash		$	51			$	6,219			$	—			$	6,270
	Short-term investments			185,244				—				—				185,244
	Accounts receivable – net			98,001				82,760				—				180,761
	Intercompany receivable			—				95,399				(95,399	)			—
	Inventories of spare parts – net			65,341				8,452				—				73,793
	Prepaid expenses			7,610				1,704				—				9,314
	Deferred income taxes			9,915				—				—				9,915
	Income taxes receivable			1,068				159				—				1,227

	Total current assets			367,230				194,693				(95,399	)			466,524
	Investment in subsidiaries and others			358,080				—				(358,080	)			—
	Property and equipment, net			638,437				239,381				—				877,818
	Restricted investments			15,485				—				—				15,485
	Other assets			16,055				198				—				16,253

	Total assets		$	1,395,287			$	434,272			$	(453,479	)		$	1,376,080

	LIABILITIES AND SHAREHOLDERS’ EQUITY
	Current Liabilities:
	Accounts payable		$	22,578			$	5,122			$	—			$	27,700
	Accrued and other current liabilities			34,477				18,335				—				52,812
	Intercompany payable			95,270				—				(95,270	)			—

	Total current liabilities			152,325				23,457				(95,270	)			80,512
	Long-term debt			543,000				—				—				543,000
	Deferred income taxes and other long-term liabilities			102,894				52,606				—				155,500
	Shareholders’ Equity:
	Common stock and paid-in capital			303,082				137,647				(137,647	)			303,082
	Accumulated other comprehensive loss			(211	)			—				—				(211	)
	Retained earnings			294,197				220,562				(220,562	)			294,197

	Total shareholders’ equity			597,068				358,209				(358,209	)			597,068

	Total liabilities and shareholders’ equity		$	1,395,287			$	434,272			$	(453,479	)		$	1,376,080



	-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.



	PHI, INC. AND SUBSIDIARIES

	CONDENSED CONSOLIDATING BALANCE SHEETS

	(Thousands of dollars)



			December 31, 2013
		Parent				Guarantor				Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only (issuer)
ASSETS
Current Assets:
Cash		$	52			$	882			$	—			$	934
Short-term investments			85,916				—				—				85,916
Accounts receivable – net			83,988				89,732				—				173,720
Intercompany receivable			129,026				—				(129,026	)			—
Inventories of spare parts – net			71,023				114				—				71,137
Prepaid expenses			6,441				1,916				—				8,357
Deferred income taxes			12,723				—				—				12,723
Income taxes receivable			1,361				510				—				1,871

Total current assets			390,530				93,154				(129,026	)			354,658
Investment in subsidiaries			112,273				—				(112,273	)			—
Property and equipment, net			579,369				206,103				—				785,472
Restricted investments			14,685				—				—				14,685
Other assets			19,111				(603	)			—				18,508

Total assets		$	1,115,968			$	298,654			$	(241,299	)		$	1,173,323

LIABILITIES AND SHAREHOLDERS’ EQUITY
Current Liabilities:
Accounts payable		$	31,232			$	5,642			$	—			$	36,874
Accrued liabilities			31,330				23,201				—				54,531
Intercompany payable			—				129,026				(129,026	)			—

Total current liabilities			62,562				157,869				(129,026	)			91,405
Long-term debt			379,000				—				—				379,000
Deferred income taxes and other long-term liabilities			114,441				28,512				—				142,953
Shareholders’ Equity:
Common stock and paid-in capital			298,480				2,674				(2,674	)			298,480
Accumulated other comprehensive loss			(24	)			—				—				(24	)
Retained earnings			261,509				109,599				(109,599	)			261,509

Total shareholders’ equity			559,965				112,273				(112,273	)			559,965

Total liabilities and shareholders’ equity		$	1,115,968			$	298,654			$	(241,299	)		$	1,173,323



-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.
Condensed Consolidating Statements of Operations	PHI, INC. AND SUBSIDIARIES

	CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

	(Thousands of dollars)



			For the year ended December 31, 2014
			Parent				Guarantor				Eliminations				Consolidated
			Company				Subsidiaries (1)
			Only (issuer)
	Operating revenues, net		$	504,180			$	332,090			$	—			$	836,270
	Expenses:
	Direct expenses			411,398				258,627				(18	)			670,007
	Selling, general, and administrative expenses			32,985				10,186				—				43,171

	Total operating expenses			444,383				268,813				(18	)			713,178
	Loss on disposition of assets, net			848				—				—				848
	Impairment of assets			10,508				—				—				10,508
	Equity in loss of unconsolidated affiliate			96				—				—				96

	Operating income			48,345				63,277				18				111,640
	Equity in net earnings of consolidated subsidiaries			(38,740	)			—				38,740				—
	Interest expense			29,510				—				—				29,510
	Loss on debt extinguishment			29,833				—				—				29,833
	Other (income) expense, net			(819	)			(17	)			18				(818	)

				19,784				(17	)			38,758				58,525

	Earnings before income taxes			28,561				63,294				(38,740	)			53,115
	Income tax expense (benefit)			(4,127	)			24,554				—				20,427

	Net earnings		$	32,688			$	38,740			$	(38,740	)		$	32,688


			For the year ended December 31, 2013
			Parent				Guarantor				Eliminations				Consolidated
			Company				Subsidiaries (1)
			Only (issuer)
	Operating revenues, net		$	564,445			$	292,055			$	—			$	856,500
	Expenses:
	Direct expenses			468,321				244,769				—				713,090
	Selling, general, and administrative expenses			29,885				8,935				—				38,820
	Management fees			(11,682	)			11,682				—				—

	Total operating expenses			486,524				265,386				—				751,910
	(Gain) on disposition of assets, net			(16,585	)			(19	)			—				(16,604	)
	Impairment of assets			1,227				421				—				1,648
	Equity in loss of unconsolidated affiliate			262				—				—				262

	Operating income			93,017				26,267				—				119,284
	Equity in net earnings of consolidated subsidiaries			(15,567	)			—				15,567				—
	Interest expense			29,434				322				—				29,756
	Other income, net			(613	)			—				—				(613	)

				13,254				322				15,567				29,413

	Earnings before income taxes			79,763				25,945				(15,567	)			90,141
	Income tax expense			20,807				10,378				—				31,185

	Net earnings		$	58,956			$	15,567			$	(15,567	)		$	58,956



-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.



PHI, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

(Thousands of dollars)



		For the year ended December 31, 2012
		Parent				Guarantor				Eliminations				Consolidated
		Company				Subsidiaries (1)
		Only (issuer)
Operating revenues, net		$	415,740			$	230,946			$	—			$	646,686
Expenses:
Direct expenses			355,689				187,835				—				543,524
Selling, general, and administrative expenses			31,384				7,667				—				39,051
Management fees			(9,238	)			9,238				—				—

Total operating expenses			377,835				204,740				—				582,575
Loss on disposition of assets, net			317				—				—				317
Equity in loss of unconsolidated affiliate			863				—				—				863

Operating income			36,725				26,206				—				62,931
Equity in net earnings of consolidated subsidiaries			(15,714	)			—				15,714				—
Interest expense			29,518				15				—				29,533
Other income, net			(651	)			—				—				(651	)

			13,153				15				15,714				28,882

Earnings before income taxes			23,572				26,191				(15,714	)			34,049
Income tax expense			5,515				10,477				—				15,992

Net earnings		$	18,057			$	15,714			$	(15,714	)		$	18,057



-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.
Condensed Consolidated Statements of Comprehensive Income	PHI, INC. AND SUBSIDIARIES

	CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

	(Thousands of dollars)



			For the year ended December 31, 2014
			Parent				Guarantor				Eliminations				Consolidated
			Company				Subsidiaries (1)
			Only
	Net earnings		$	32,688			$	38,740			$	(38,740	)		$	32,688
	Unrealized loss on short-term investments			285				—				—				285
	Other unrealized loss			24				—				—				24
	Changes in pension plan assets and benefit obligations			(17	)			—				—				(17	)
	Tax impact			(105	)			—				—				(105	)

			$	32,501			$	38,740			$	(38,740	)		$	32,501


			For the year ended December 31, 2013
			Parent				Guarantor				Eliminations				Consolidated
			Company				Subsidiaries (1)
			Only
	Net earnings		$	58,956			$	15,567			$	(15,567	)		$	58,956
	Unrealized gain on short-term investments			44				—				—				44
	Changes in pension plan assets and benefit obligations			(2	)			—				—				(2	)
	Tax impact			(15	)			—				—				(15	)

			$	58,983			$	15,567			$	(15,567	)		$	58,983


			For the year ended December 31, 2012
			Parent				Guarantor				Eliminations				Consolidated
			Company				Subsidiaries (1)
			Only
	Net earnings		$	18,057			$	15,714			$	(15,714	)		$	18,057
	Unrealized gain on short-term investments			92				—				—				92
	Changes in pension plan assets and benefit obligations			(22	)			—				—				(22	)
	Tax impact			(28	)			—				—				(28	)

			$	18,099			$	15,714			$	(15,714	)		$	18,099



	-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.
Condensed Consolidating Statements of Cash Flows	PHI, INC. AND SUBSIDIARIES

	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

	(Thousands of dollars)



			For the year ended December 31, 2014
			Parent				Guarantor				Eliminations				Consolidated
			Company				Subsidiaries (1)
			Only (issuer)
	Net cash provided by operating activities		$	51,476			$	68,043			$	—			$	119,519
	Investing activities:
	Purchase of property and equipment			(157,690	)			—				—				(157,690	)
	Proceeds from asset dispositions			10,266				—				—				10,266
	Purchase of short-term investments			(465,094	)			—				—				(465,094	)
	Proceeds from sale of short-term investments			363,110				—				—				363,110
	Refund of deposits on aircraft			11,506				—				—				11,506
	Payments of deposits on aircraft			(6,948	)			—				—				(6,948	)
	Other			(200	)			—				—				(200	)

	Net cash used in investing activities			(245,050	)			—				—				(245,050	)

	Financing activities:
	Proceeds from issuance of Senior Notes due 2019			500,000				—				—				500,000
	Repayment of Senior Notes due 2018			(300,000	)			—				—				(300,000	)
	Premium and cost to retire debt early			(26,749	)			—				—				(26,749	)
	Debt issuance costs			(6,232	)			—				—				(6,232	)
	Proceeds from line of credit			264,253				—				—				264,253
	Payments on line of credit			(300,253	)			—				—				(300,253	)
	Repurchase of common stock			(152	)			—				—				(152	)
	Due to/from affiliate, net			62,706				(62,706	)			—				—

	Net cash provided by financing activities			193,573				(62,706	)			—				130,867

	(Decrease) increase in cash			(1	)			5,337				—				5,336
	Cash, beginning of year			52				882				—				934

	Cash, end of year		$	51			$	6,219			$	—			$	6,270




	PHI, INC. AND SUBSIDIARIES

	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

	(Thousands of dollars)



			For the year ended December 31, 2013
			Parent				Guarantor				Eliminations				Consolidated
			Company				Subsidiaries (1)(2)
			Only (issuer)
	Net cash provided by operating activities		$	82,660			$	22,436			$	—			$	105,096
	Investing activities:
	Purchase of property and equipment			(102,726	)			—				—				(102,726	)
	Proceeds from asset dispositions			42,197				—				—				42,197
	Purchase of short-term investments			(375,503	)			—				—				(375,503	)
	Proceeds from sale of short-term investments			338,970				—				—				338,970
	Payments of deposits on aircraft			(9,318	)			—				—				(9,318	)
	Refunds on deposits on aircraft			8,161				—				—				8,161

Net cash used in investing activities			(98,219	)			—				—				(98,219	)

Financing activities:
Repurchase of common stock			(1,037	)											(1,037	)
Proceeds on line of credit			164,771				—				—				164,771
Payments on line of credit			(172,526	)			—				—				(172,526	)
Due to/from affiliate, net			23,851				(23,851	)			—				—

Net cash provided by financing activities			15,059				(23,851	)			—				(8,792	)

(Decrease) increase in cash			(500	)			(1,415	)			—				(1,915	)
Cash, beginning of year			552				2,297				—				2,849

Cash, end of year		$	52			$	882			$	—			$	934


		For the year ended December 31, 2012
		Parent				Guarantor				Eliminations				Consolidated
		Company				Subsidiaries (1)(2)
		Only (issuer)
Net cash provided by operating activities		$	15,781			$	34,769			$	—			$	50,550
Investing activities:
Purchase of property and equipment			(128,475	)			—				—				(128,475	)
Proceeds from asset dispositions			11,302				—				—				11,302
Purchase of short-term investments			(216,265	)			—				—				(216,265	)
Proceeds from sale of short-term investments			249,041				—				—				249,041
Payments of deposits on aircraft			(8,717	)			—				—				(8,717	)
Refunds on deposits on aircraft			2,500				—				—				2,500
Loan to unconsolidated affiliate			(975	)			—				—				(975	)
Other			(50	)			—				—				(50	)

Net cash used in investing activities			(91,639	)			—				—				(91,639	)

Financing activities:
Repurchase of common stock			(1,861	)											(1,861	)
Proceeds on line of credit			127,323				—				—				127,323
Payments on line of credit			(86,615	)			—				—				(86,615	)
Due to/from affiliate, net			33,250				(33,250	)			—				—

Net cash provided by financing activities			72,097				(33,250	)			—				38,847

(Decrease) increase in cash			(3,761	)			1,519				—				(2,242	)
Cash, beginning of year			4,313				778				—				5,091

Cash, end of year		$	552			$	2,297			$	—			$	2,849



-1	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors’ subsidiaries amounts.
-2	Cash flows between the Parent Company and Guarantor Subsidiaries related to the Company’s centralized cash management activities in 2013 and 2012 have been adjusted to show the effects on net cash provided by operating and financing activities.

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013	Jun. 30, 2013
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aircraft	Jun. 30, 2013
Summary Of Significant Accounting Policies [Line Items]
Percentage of stock owned by CEO	69.50%
Maturities Period of liquid investments	Three months or less
Valuation reserves related to obsolescence and slow moving inventory	$13,500,000	$12,300,000
Insurance retention per claim	250,000
Accrued liabilities related to health care claims	1,700,000	1,500,000
Amount deductible per incident	500,000
Accrued expense related to workers compensation claims	2,500,000	2,900,000
Amounts paid to offshore insurance captive	900,000	800,000
Allowance for contractual discounts	96,600,000	74,700,000	54,600,000
Allowance for uncompensated care	41,900,000	46,400,000	48,000,000
Value of uncompensated care services	9,100,000	7,900,000	6,200,000
Estimated cost of providing charity services	2,100,000	3,000,000	2,200,000
Percentage of reserved category of self pay	100.00%
Contract termination period	90 days
Termination fee	13,500,000
Allowance for doubtful accounts	100,000	100,000
Percentage of consolidated operating revenues	30.00%	28.00%	28.00%
Percentage of trade receivables	18.00%	19.00%
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Unrealized losses recorded	300,000
Medium Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Carrying value of aircraft	16,500,000	4,000,000
Market value of aircraft	6,000,000	2,400,000
Impairments of assets	10,500,000	1,600,000
Air Medical [Member]
Summary Of Significant Accounting Policies [Line Items]
Carrying value of aircraft	10,800,000
Cash realized from sale of assets	8,200,000
Gain or loss on sale of assets	2,600,000
Allowance for contractual discounts	96,600,000	74,700,000	54,600,000
Allowance for uncompensated care	41,900,000	46,400,000	48,000,000
Air Medical [Member] \| Light Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of aircraft sold	4
Air Medical [Member] \| Medium Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of aircraft sold	1
Number of Aircraft impaired	1	2
Oil and Gas [Member]
Summary Of Significant Accounting Policies [Line Items]
Carrying value of aircraft	5,500,000
Cash realized from sale of assets	5,900,000
Gain or loss on sale of assets	400,000
Oil and Gas [Member] \| Light Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Carrying value of aircraft				1,200,000
Cash realized from sale of assets				2,600,000
Gain or loss on sale of assets				1,400,000
Number of aircraft sold	9			1
Oil and Gas [Member] \| Fixed Wing Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of aircraft sold	3
Oil and Gas [Member] \| Medium Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of Aircraft impaired	13	2
Oil and Gas [Member] \| Heavy Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Carrying value of aircraft		20,600,000
Cash realized from sale of assets		37,000,000
Gain or loss on sale of assets		16,400,000
Number of aircraft sold		2
Air Medical and Technical Services [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of consolidated operating revenues	10.00%	17.00%
Percentage of trade receivables	20.00%	20.00%
Aircraft [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Salvage value of aircraft	54.00%
Aircraft [Member] \| Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Salvage value of aircraft	25.00%
Flight equipment [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	15 years
Flight equipment [Member] \| Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	5 years
Other equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Gain or loss on sale of assets	1,400,000
Other equipment [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	10 years
Other equipment [Member] \| Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	3 years
Leasehold improvements [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	10 years
Leasehold improvements [Member] \| Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	6 years
Airframe [Member]
Summary Of Significant Accounting Policies [Line Items]
Gain or loss on sale of assets					$1,700,000

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Provisions for Contractual Discounts and Uncompensated Care Applied to Air Medical Trade Receivables Expressed as Percentage of Total Segment Billings (Detail) (Air Medical [Member], Trade Accounts Receivable [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Air Medical [Member] \| Trade Accounts Receivable [Member]
Provisions For Contractual Discounts And Estimated Uncompensated Care [Line Items]
Allowance for contractual discounts	53.00%	44.00%
Allowance for uncompensated care	23.00%	27.00%

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Schedule of Provisions for Contractual Discounts and Estimated Uncompensated Care Applied to Air Medical Revenues Expressed as Percentage of Total Segment Billings (Detail) (Air Medical [Member], Sales Revenue, Net [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Air Medical [Member] \| Sales Revenue, Net [Member]
Provisions For Contractual Discounts And Estimated Uncompensated Care [Line Items]
Provision for contractual discounts	72.00%	60.00%	56.00%
Provision for uncompensated care	2.00%	10.00%	11.00%

Summary_of_Significant_Account6

Summary of Significant Accounting Policies - Schedule of Net Revenue Attributable to Medicaid, Medicare Insurance and Self Pay as Percentage of Net Air Medical Revenues (Detail) (Air Medical [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Insurance [Member]
Segment Reporting Information [Line Items]
Percentage of net Air Medical revenues	74.00%	73.00%	69.00%
Medicare [Member]
Segment Reporting Information [Line Items]
Percentage of net Air Medical revenues	18.00%	19.00%	21.00%
Medicaid [Member]
Segment Reporting Information [Line Items]
Percentage of net Air Medical revenues	8.00%	7.00%	9.00%
Self Pay [Member]
Segment Reporting Information [Line Items]
Percentage of net Air Medical revenues	0.00%	1.00%	1.00%

Investments_Additional_Informa

Investments - Additional Information (Detail) (USD $)	12 Months Ended
Investments - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales of short term investments	$363,110,000	$338,970,000	$249,041,000
Restricted investments	15,485,000	14,685,000
Investments in continuous unrealized loss position	$0	$0

Investments_Components_of_Inve

Investments - Components of Investments (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	$203,362	$102,673
Unrealized Gains	21	67
Unrealized Losses	-268	-30
Fair Value	203,115	102,710
Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	200,976	100,564
Unrealized Gains	21	67
Unrealized Losses	-268	-30
Fair Value	200,729	100,601
Investments [Member] \| Money Market Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	68,612	18,470
Fair Value	68,612	18,470
Investments [Member] \| Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis		2,999
Fair Value		2,999
Investments [Member] \| Municipal bonds and notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	1,500	1,500
Unrealized Gains	2
Unrealized Losses		-1
Fair Value	1,502	1,499
Investments [Member] \| Corporate bonds and notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	130,864	77,595
Unrealized Gains	19	67
Unrealized Losses	-268	-29
Fair Value	130,615	77,633
Deferred Compensation Plan Assets [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	2,386	2,109
Fair Value	$2,386	$2,109

Investments_Cost_and_Fair_Valu

Investments - Cost and Fair Value of Debt Investments Based on Maturities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Available-for-sale Securities, Debt Maturities [Abstract]
Due in one year or less, Amortized Costs	$70,180	$32,536
Due within two years, Amortized Costs	62,184	49,558
Total, Amortized Costs	132,364	82,094
Due in one year or less, Fair Value	70,169	32,538
Due within two years, Fair Value	61,948	49,593
Total, Fair Value	$132,117	$82,131

Investments_Average_Coupon_Rat

Investments - Average Coupon Rate Percentage and the Average Days to Maturity of Debt (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Average Coupon Rate	0.00%	0.15%
Average Days To Maturity	0 days	86 days
Municipal bonds and notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Average Coupon Rate	0.53%	0.53%
Average Days To Maturity	134 days	499 days
Corporate bonds and notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Average Coupon Rate	1.83%	2.13%
Average Days To Maturity	348 days	390 days

Investments_Investments_in_Con

Investments - Investments in Continuous Unrealized Loss Position for Twelve Months or More (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$100,071	$36,271
Unrealized Losses	-268	-30
Corporate bonds and notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	100,071	34,772
Unrealized Losses	-268	-29
Municipal bonds and notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value		1,499
Unrealized Losses		($1)

Fair_Value_Measurements_Summar

Fair Value Measurements - Summary of Valuation of Investments and Financial Instruments Pricing Levels (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	$203,115	$102,710
Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	200,729	100,601
Investments [Member] \| Money Market Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	68,612	18,470
Investments [Member] \| Municipal bonds and notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	1,502	1,499
Investments [Member] \| Corporate bonds and notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	130,615	77,633
Investments [Member] \| Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		2,999
Deferred Compensation Plan Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	2,386	2,109
(Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	70,998	20,579
(Level 1) [Member] \| Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	68,612	18,470
(Level 1) [Member] \| Investments [Member] \| Money Market Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	68,612	18,470
(Level 1) [Member] \| Deferred Compensation Plan Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	2,386	2,109
(Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	132,117	82,131
(Level 2) [Member] \| Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	132,117	82,131
(Level 2) [Member] \| Investments [Member] \| Municipal bonds and notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	1,502	1,499
(Level 2) [Member] \| Investments [Member] \| Corporate bonds and notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	130,615	77,633
(Level 2) [Member] \| Investments [Member] \| Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		$2,999

Fair_Value_Summary_of_Combined

Fair Value - Summary of Combined Fair Value of Assets that Incurred Impairments (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value Disclosures [Abstract]
Amount of impairment incurred	$10,508	$1,648
Combined fair value of assets incurring impairment	$6,000	$2,400

Property_and_Equipment_Summary

Property and Equipment - Summary of Company's Property and Equipment (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$1,192,866	$1,096,017
Less accumulated depreciation and amortization	-315,048	-310,545
Property and equipment, net	877,818	785,472
Flight equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,053,640	959,986
Facility & improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	61,246	57,723
Operating equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	24,764	24,594
Data processing equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	32,374	33,870
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,133	7,867
Medical equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,377	7,079
Other [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$5,332	$4,898

Property_and_Equipment_Additio

Property and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense related to property and equipment	$43.70	$38.90	$35

Other_Assets_Schedule_of_Compa

Other Assets - Schedule of Company's Other Assets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deposits on future purchases of aircraft	$8,305	$12,863
Deferred financing cost	5,246	3,196
Investments (Officers' Deferred Compensation Plan)	2,386	2,109
Other	316	340
Total	$16,253	$18,508

Accrued_and_Other_Current_Liab2

Accrued and Other Current Liabilities - Schedule of Accrued Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Salaries & wages	$16,203	$14,318
Incentive compensation	11,730	11,617
Income taxes	3,787	6,790
Interest	7,891	5,621
Vacation payable	6,112	5,751
Group medical	1,735	1,516
Transportations tax	907	1,975
Operating lease	1,227	1,048
Workers compensation	1,185	3,684
Other	2,035	2,211
Total accrued liabilities	$52,812	$54,531

Longterm_Debt_Components_of_Lo

Long-term Debt - Components of Long-term Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term debt	$543,000	$379,000
5.25% Senior Notes due March 15, 2019 [Member]
Debt Instrument [Line Items]
Long-term debt	500,000
8.625% Senior Notes due October 15, 2018 [Member]
Debt Instrument [Line Items]
Long-term debt		300,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt	$43,000	$79,000

Longterm_Debt_Components_of_Lo1

Long-term Debt - Components of Long-term Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014
Debt Instrument [Line Items]
Interest rate on Senior Notes	5.25%
5.25% Senior Notes due March 15, 2019 [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	5.25%
Senior Notes payable periods	15-Mar-19
8.625% Senior Notes due October 15, 2018 [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	8.63%
Senior Notes payable periods	15-Oct-18

Longterm_Debt_Summary_of_Annua

Long-term Debt - Summary of Annual Maturities of Long-term Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
2015	$0
2016	43,000
2017	0
2018	0
2019	500,000
Thereafter	0
Total	$543,000	$379,000

Longterm_Debt_Additional_Infor

Long-term Debt - Additional Information (Detail) (USD $)	12 Months Ended
Long-term Debt - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Sep. 18, 2013
Debt Instrument [Line Items]
Interest rate on Senior Notes	5.25%
Proceeds from issuance of senior notes	$500,000,000
Repayment of Senior Notes	300,000,000
Pretax charge related to early redemption of senior notes	-29,833,000
Carrying value of senior notes	543,000,000	379,000,000
Letters of credit outstanding under the facility	15,500,000	15,500,000
Letter of credit securing workers compensation policy	2,500,000	2,900,000
Middle East [Member]
Debt Instrument [Line Items]
Revolving credit facility, maturity date	29-Oct-15
Letter of credit securing contract in Middle East	9,200,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Carrying value of senior notes	43,000,000	79,000,000
Increased Borrowing capacity			150,000,000
Revolving credit facility, maturity date	1-Oct-16
Revolving Credit facility , Covenants, consolidated working capital ratio	200.00%
Revolving Credit facility , Covenants, consolidated net worth ratio	150.00%
Revolving Credit facility , Covenants, fixed coverage ratio	110.00%
Revolving Credit facility , Covenants, consolidated net worth	450,000,000
Letter of credit securing workers compensation policy	6,300,000
Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
LIBOR plus interest rate on borrowed funds	2.25%
5.25% Senior Notes due March 15, 2019 [Member]
Debt Instrument [Line Items]
Percentage of principal amount redeemed	101.00%
Interest rate on Senior Notes	5.25%
Proceeds from issuance of senior notes	493,800,000
Fair market value of Senior Notes	425,600,000
Carrying value of senior notes	500,000,000
8.625% Senior Notes due October 15, 2018 [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	8.63%
Repayment of Senior Notes	300,000,000
Cost of debt repayment	329,400,000
Pretax charge related to early redemption of senior notes	-29,833,000
Premium on early redemption of senior notes	-26,749,000
Write off of unamortized financing costs	3,100,000
Fair market value of Senior Notes		323,200,000
Carrying value of senior notes		$300,000,000

Income_Taxes_Schedule_of_Incom

Income Taxes - Schedule of Income Tax Expense (Benefit) (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current
Federal	$0
State	307	353	360
Foreign	4,352	9,637
Deferred - principally Federal	15,768	21,195	15,632
Total	$20,427	$31,185	$15,992

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
Income Taxes - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes Disclosure [Line Items]
Federal Statutory rate	35.00%	35.00%	35.00%
Increase in total stake holders equity	$500,000
Operating loss carryforwards	143,400,000
Operating loss carryforwards, expiration date start	2022
Operating loss carryforwards, expiration date end	2032
Net operating loss carryforwards, majority expiration date start	2017
Net operating loss carryforwards, majority expiration date end	2027
Valuation allowance - state NOL carryforwards	219,000	541,000
Foreign tax credits	17,000,000
Foreign tax credits, expiration date start	2015
Foreign tax credits, expiration date end	2024
Valuation allowance - tax credit carryforwards	2,000,000
Valuation allowance - tax credit carryforwards recorded in 2014	100,000
Income taxes paid	9,590,000	1,161,000	237,000
Unrecognized tax benefits	0
State and Local Jurisdiction [Member]
Income Taxes Disclosure [Line Items]
Operating loss carryforwards	126,600,000
Operating loss carryforwards, expiration date end	2032
Valuation allowance - state NOL carryforwards	219,000
State and Local Jurisdiction [Member] \| Valuation Allowance, Operating Loss Carryforwards [Member]
Income Taxes Disclosure [Line Items]
Reversal of valuation allowance	($300,000)

Income_Taxes_Schedule_of_Incom1

Income Taxes - Schedule of Income Tax Expense (Benefit) as Percentage of Pre-Tax Earnings (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Income taxes at statutory rate	35.00%	35.00%	35.00%
Valuation allowance - foreign tax credit			5.00%
Change in tax rate on deferred items		-4.00%
State income taxes, net of federal benefit	2.00%	2.00%	5.00%
Other items - net	1.00%	2.00%	2.00%
Total	38.00%	35.00%	47.00%
Income taxes at statutory rate	$18,590	$31,550	$11,917
Increase (decrease) in taxes resulting from:
Valuation allowance - foreign tax credit	113		1,649
Change in tax rate on deferred items		-3,850
State income taxes, net of federal benefit	916	2,161	1,688
Other items - net	808	1,324	738
Total	$20,427	$31,185	$15,992

Income_Taxes_Schedule_of_Tax_E

Income Taxes - Schedule of Tax Effects of Temporary Differences that Give Rise to Significant Portions of Deferred Tax Assets and Deferred Tax Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Deferred compensation	$1,023	$656
Foreign tax credits	16,982	12,611
Vacation and bonus accrual	2,031	5,931
Inventory valuation	6,093	5,655
Rental accrual	1,799	1,634
Hurricane relief credit	1,255	1,255
Stock-based compensation	2,977	1,307
Other	2,714	2,674
Net operating losses	56,305	55,990
Total deferred tax assets	91,179	87,713
Valuation allowance - state NOL carryforwards	-219	-541
Valuation allowance - tax credit carryforwards	-2,047	-1,933
Valuation allowance - other	-1,466	-1,515
Total deferred tax assets, net	87,447	83,724
Deferred tax liabilities:
Tax depreciation in excess of book depreciation	-218,064	-198,358
Total deferred tax liabilities	-218,064	-198,358
Net deferred tax liabilities	-130,617	-114,634
Current deferred tax assets	9,915	12,723
Deferred tax liability - long-term	-140,532	-127,357
Net deferred tax liabilities	($130,617)	($114,634)

Earnings_Per_Share_Components_

Earnings Per Share - Components of Basic and Diluted Earnings Per Share (Detail)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average outstanding shares of common stock, basic	15,483	15,474	15,418
Dilutive effect of restricted stock units	202	165	70
Weighted average outstanding shares of common stock, diluted	15,685	15,639	15,488

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Aggregate deferred under Compensation Plan	$2.40	$2.10
Earnings before tax upon achieving a specified earnings threshold	8.25%
Accrued Incentive Compensation expense	11.7	11.5	6
Compensation expense related to incentive plans	4.8	2.4	4.3
Percentage of employee compensation contribution	6.00%
Percentage of vesting contribution	25.00%
Vesting period of employees	5 years
Matching contribution of employees	11.5	10.5	9
Safety Incentive Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Compensation expense related to incentive plans	$1	$1	$0.90

Stockbased_Compensation_Additi

Stock-based Compensation - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Based Compensation [Line Items]
Compensation expense related to incentive plans	$4.80	$2.40	$4.30
Non-Voting Time-Vested Restricted Stock Units [Member]
Stock Based Compensation [Line Items]
Weighted average grant date fair value	$43.25	$35.09
Aggregate value of vested shares	0.3
Recognized / Unrecognized compensation cost	4.6
Weighted average period	2 years 3 months 4 days
Non-Voting Performance Units [Member]
Stock Based Compensation [Line Items]
Weighted average grant date fair value	$43.07
Recognized / Unrecognized compensation cost	5.5
Weighted average period	1 year 9 months 18 days
Maximum [Member] \| Non-Voting Time-Vested Restricted Stock Units [Member]
Stock Based Compensation [Line Items]
Aggregate value of vested shares		$0.10
2012 Long - Term Incentive Plan [Member]
Stock Based Compensation [Line Items]
Shares available for issuance	163,676
Forfeiture restrictions percentage	100.00%
Vesting period of employees	3 years
2012 Long - Term Incentive Plan [Member] \| Non-Voting Common Stock [Member]
Stock Based Compensation [Line Items]
Common stock authorized to issue	750,000
1995 Incentive Plan [Member]
Stock Based Compensation [Line Items]
Forfeiture restrictions percentage	100.00%
Vesting period of employees	3 years
1995 Incentive Plan [Member] \| Non-Voting Common Stock [Member]
Stock Based Compensation [Line Items]
Common stock authorized to issue	575,000
Shares available for issuance	738
1995 Incentive Plan [Member] \| Voting Restricted Stock Units [Member]
Stock Based Compensation [Line Items]
Voting common stock outstanding	0	0
1995 Incentive Plan [Member] \| Voting Common Stock [Member]
Stock Based Compensation [Line Items]
Common stock authorized to issue	175,000
Shares available for issuance	32,542

Stockbased_Compensation_Summar

Stock-based Compensation - Summary of Activity for Non-voting Time-vested Restricted Stock (Detail) (Non-Voting Time-Vested Restricted Stock Units [Member], USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Non-Voting Time-Vested Restricted Stock Units [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Share unit, Beginning Balance	61,258
Share unit, Granted	142,726
Share unit, Forfeited	0
Share unit, Vested and released to participants	-12,329
Share unit, Ending Balance	191,655	61,258
Weighted Average Grant Fair Value, Beginning Balance	$24.11
Weighted Average Grants Date Fair Value, Granted	$43.25	$35.09
Weighted Average Grants Date Fair Value, Forfeited	$0
Weighted Average Grants Date Fair Value, Vested and released to participants	($21.05)
Weighted Average Grant Fair Value, Ending Balance	$38.56	$24.11
Remaining Average Contractual Life, Ending	2 years 3 months 4 days	1 year 7 months 24 days
Aggregate Value, Beginning Balance	$1,477
Aggregate Value, Ending Balance	$7,391	$1,477

Stockbased_Compensation_Summar1

Stock-based Compensation - Summary of Activity for Non-voting Time-vested Restricted Stock Granted to Directors (Detail) (Non-Voting Time-Vested Restricted Stock Units [Member], USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Share unit, Beginning Balance	61,258
Share unit, Granted	142,726
Share unit, Forfeited	0
Share unit, Vested and released to participants	-12,329
Share unit, Ending Balance	191,655	61,258
Weighted Average Grant Fair Value, Beginning Balance	$24.11
Weighted Average Grants Date Fair Value, Granted	$43.25	$35.09
Weighted Average Grants Date Fair Value, Forfeited	$0
Weighted Average Grants Date Fair Value, Vested and released to participants	($21.05)
Weighted Average Grant Fair Value, Ending Balance	$38.56	$24.11
Remaining Average Contractual Life, Ending	2 years 3 months 4 days	1 year 7 months 24 days
Aggregate Value, Beginning Balance	$1,477
Aggregate Value, Ending Balance	7,391	1,477
Director [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Share unit, Beginning Balance	3,048
Share unit, Granted	2,202
Share unit, Forfeited	0
Share unit, Vested and released to participants	-762
Share unit, Ending Balance	4,488	3,048
Weighted Average Grant Fair Value, Beginning Balance	$38.44
Weighted Average Grants Date Fair Value, Granted	$44.04
Weighted Average Grants Date Fair Value, Forfeited	$0
Weighted Average Grants Date Fair Value, Vested and released to participants	($38.44)
Weighted Average Grant Fair Value, Ending Balance	$41.19	$38.44
Remaining Average Contractual Life, Ending	2 years 5 months 23 days	2 years 10 months 6 days
Aggregate Value, Beginning Balance	117
Aggregate Value, Ending Balance	$185	$117

Stockbased_Compensation_Summar2

Stock-based Compensation - Summary of Activity for Non-voting Performance Units (Detail) (Non-Voting Performance Units [Member], USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Non-Voting Performance Units [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Share unit, Beginning Balance	277,026
Share unit, Granted	117,643
Share unit, Forfeited	0
Share unit, Vested and released to participants	0
Share unit, Ending Balance	394,669	277,026
Weighted Average Grant Fair Value, Beginning Balance	$24.55
Weighted Average Grants Date Fair Value, Granted	$43.07
Weighted Average Grants Date Fair Value, Forfeited	$0
Weighted Average Grants Date Fair Value, Vested and released to participants	$0
Weighted Average Grant Fair Value, Ending Balance	$30.07	$24.55
Remaining Average Contractual Life, Ending	1 year 9 months 11 days	3 years 4 months 28 days
Aggregate Value, Beginning Balance	$6,812
Aggregate Value, Ending Balance	$11,878	$6,812

Commitments_and_Contingencies_1

Commitments and Contingencies - Summary of Rental Expense Incurred Under Leases (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Aircraft	$44,908	$41,803	$36,240
Other	7,790	7,657	8,081
Total	$52,698	$49,460	$44,321

Commitments_and_Contingencies_2

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 02, 2015
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aircraft
Long-term Purchase Commitment [Line Items]
Aircraft and real estate rental expense	$52,698,000	$49,460,000	$44,321,000
Aggregate amount of guarantees and bonds	1,100,000
Total aircraft deposits	8,305,000	12,863,000
Aggregate estimated probable liability environmental matters	200,000
Affiliated Entity [Member]
Long-term Purchase Commitment [Line Items]
Aircraft and real estate rental expense	500,000	600,000	300,000
Minimum [Member]
Long-term Purchase Commitment [Line Items]
Guarantee expiration period	2015-03
Maximum [Member]
Long-term Purchase Commitment [Line Items]
Guarantee expiration period	2015-11
Heavy Aircraft [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase price for aircraft	89,300,000
Number of aircraft purchased	5
Number of aircrafts acquire under contract		6
Option to purchase additional number of aircrafts	6
Heavy Aircraft [Member] \| Subsequent Event [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase price for aircraft				17,700,000
Number of aircraft purchased				1
Medium Aircraft [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase price for aircraft	14,900,000
Number of aircraft purchased	2
Fixed Wing Aircraft [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase price for aircraft	3,500,000
Number of aircraft purchased	1
2015 [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase price for aircraft	17,700,000
2016 [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase price for aircraft	67,800,000
2017 [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase price for aircraft	55,700,000
2018 [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase price for aircraft	127,000,000
2019 [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase price for aircraft	$150,400,000

Commitments_and_Contingencies_3

Commitments and Contingencies - Summary of Remaining Aggregate Lease Commitments Under Operating Leases Having Initial Non-Cancelable Terms in Excess of One Year (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014
Operating Leased Assets [Line Items]
2015	$49,359
2016	46,048
2017	42,947
2018	38,673
2019	31,460
Thereafter	108,184
Total	316,671
Aircraft [Member]
Operating Leased Assets [Line Items]
2015	45,379
2016	42,885
2017	40,595
2018	36,914
2019	30,262
Thereafter	106,035
Total	302,070
Other [Member]
Operating Leased Assets [Line Items]
2015	3,980
2016	3,163
2017	2,352
2018	1,759
2019	1,198
Thereafter	2,149
Total	$14,601

Business_Segments_and_Geograph2

Business Segments and Geographic Areas - Schedule of Accounts Receivable and Revenue by Major Customers by Reporting Segments (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Customer Concentration Risk [Member] \| Oil and Gas [Member] \| Sales Revenue, Segment [Member] \| Customer A [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	17.00%	15.00%	15.00%
Customer Concentration Risk [Member] \| Oil and Gas [Member] \| Sales Revenue, Segment [Member] \| Customer B [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	13.00%	13.00%	13.00%
Customer Concentration Risk [Member] \| Air Medical and Technical Services [Member] \| Sales Revenue, Segment [Member] \| Customer C [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	10.00%	17.00%	2.00%
Concentration of Credit Risk [Member] \| Oil and Gas [Member] \| Accounts Receivable [Member] \| Customer A [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	7.00%	7.00%
Concentration of Credit Risk [Member] \| Oil and Gas [Member] \| Accounts Receivable [Member] \| Customer B [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	12.00%	12.00%
Concentration of Credit Risk [Member] \| Air Medical and Technical Services [Member] \| Accounts Receivable [Member] \| Customer C [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	20.00%	20.00%

Business_Segments_and_Geograph3

Business Segments and Geographic Areas - Schedule of Profit or Loss and Assets of Each of Company's Reportable Segments (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Total operating revenues	$210,760	$216,294	$212,145	$197,071	$281,227	$200,762	$195,543	$178,968	$836,270		$856,500		$646,686
Total segment selling, general and administrative expenses									43,171		38,820		39,051
Total net segment profit (loss)									111,640		119,284		62,931
Interest expense									-29,510		-29,756		-29,533
Loss on debt extinguishment									-29,833
Earnings before income taxes	11,651	28,277	21,700	-8,513	18,674	24,212	32,525	14,730	53,115		90,141		34,049
Reportable Operating Segments [Member]
Segment Reporting Information [Line Items]
Total operating revenues									836,270		856,500		646,686
Total segment direct expenses									670,103		713,352		544,387
Total segment selling, general and administrative expenses									14,573		12,935		11,036
Total segment expenses									684,676		726,287		555,423
Total net segment profit (loss)									151,594		130,213		91,263
Reportable Operating Segments [Member] \| Oil and Gas [Member]
Segment Reporting Information [Line Items]
Total operating revenues									516,909		489,055		424,514
Total segment direct expenses									411,679	[1]	393,251	[1]	360,400	[1]
Total segment selling, general and administrative expenses									4,615		4,059		3,736
Total net segment profit (loss)									100,615		91,745		60,378
Reportable Operating Segments [Member] \| Air Medical [Member]
Segment Reporting Information [Line Items]
Total operating revenues									300,212		277,884		211,148
Total segment direct expenses									243,573		231,880		175,944
Total segment selling, general and administrative expenses									9,801	[2]	8,875	[2]	7,300	[2]
Total net segment profit (loss)									46,838		37,129		27,904
Interest expense											-300
Reportable Operating Segments [Member] \| Technical Services [Member]
Segment Reporting Information [Line Items]
Total operating revenues									19,149		89,561		11,024
Total segment direct expenses									14,851		88,221		8,043
Total segment selling, general and administrative expenses									157		1
Total net segment profit (loss)									4,141		1,339		2,981
Other, net [Member]
Segment Reporting Information [Line Items]
Other, net									-10,539	[3]	15,569	[3]	334	[3]
Corporate [Member]
Segment Reporting Information [Line Items]
Unallocated selling, general and administrative costs									($28,597)		($26,207)		($28,015)

[1]	Includes equity in loss of unconsolidated affiliate.
[2]	Includes interest expense $0.3 million for the year ended December 31, 2013.
[3]	Includes gains on disposition of property and equipment and other income.

Business_Segments_and_Geograph4

Business Segments and Geographic Areas - Schedule of Profit or Loss and Assets of Each of Company's Reportable Segments (Parenthetical) (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Interest expense	$29,510	$29,756	$29,533
Reportable Operating Segments [Member] \| Air Medical [Member]
Segment Reporting Information [Line Items]
Interest expense		$300

Business_Segments_and_Geograph5

Business Segments and Geographic Areas - Summary of Gains on Disposition of Property and Equipment and Other Income (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting, Asset Reconciling Item [Line Items]
Expenditures for long-lived assets	$157,705	$102,590	$136,419
Depreciation and amortization	50,848	42,848	41,495
Total assets	1,376,080	1,173,323
Oil and Gas [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Expenditures for long-lived assets	119,235	62,934	115,543
Depreciation and amortization	29,635	26,653	24,048
Total assets	726,008	643,384
Air Medical [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Expenditures for long-lived assets	37,317	37,728	19,516
Depreciation and amortization	13,067	11,395	10,208
Total assets	336,510	318,345
Technical Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Depreciation and amortization	493	172	83
Total assets	7,842	8,686
Corporate [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Expenditures for long-lived assets	1,153	1,928	1,360
Depreciation and amortization	7,653	4,628	7,156
Total assets	$305,720	$202,908

Business_Segments_and_Geograph6

Business Segments and Geographic Areas - Summary of Company's Revenues from External Customers and Long-Lived Assets, by Geographical Areas (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	$210,760	$216,294	$212,145	$197,071	$281,227	$200,762	$195,543	$178,968	$836,270	$856,500	$646,686
Total Long-Lived Assets	877,818				785,472				877,818	785,472
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues									747,063	699,298	618,270
Total Long-Lived Assets	846,377				752,936				846,377	752,936
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues									89,207	157,202	28,416
Total Long-Lived Assets	$31,441				$32,536				$31,441	$32,536

Quarterly_Financial_Data_Summa

Quarterly Financial Data - Summary of Condensed Quarterly Results of Operations (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Operating revenues	$210,760	$216,294	$212,145	$197,071	$281,227	$200,762	$195,543	$178,968	$836,270	$856,500	$646,686
Gain (loss) on disposition of assets, net	523	-56	-242	-1,073	-529	-1,399	-14,701	25	-848	16,604	-317
Earnings (loss) before income taxes	11,651	28,277	21,700	-8,513	18,674	24,212	32,525	14,730	53,115	90,141	34,049
Net earnings (loss)	$7,392	$17,249	$13,368	($5,321)	$16,825	$13,777	$19,516	$8,838	$32,688	$58,956	$18,057
Net earnings (loss) per share
Basic	$0.48	$1.11	$0.86	($0.34)	$1.09	$0.89	$1.26	$0.57
Diluted	$0.47	$1.10	$0.85	($0.34)	$1.07	$0.88	$1.25	$0.57

Variable_Interest_Entity_Addit

Variable Interest Entity - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Variable Interest Entity [Line Items]
Earnings (loss) in equity of unconsolidated affiliate	$100,000	($300,000)
Trade receivables	2,800,000	3,500,000
Accrued and other current liabilities	52,812,000	54,531,000
Other assets	0	0
Operating revenue	3,400,000	2,000,000
PHIC's date of incorporation	26-May-11
PHI Century Limited [Member]
Variable Interest Entity [Line Items]
Investment in the common stock	49.00%
Accrued and other current liabilities	$900,000	$1,900,000

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Information - Guarantor Subsidiaries - Additional Information (Detail)	Dec. 31, 2014
Guarantor Information [Abstract]
Ownership percentage in domestic subsidiaries	100.00%
Interest rate on Senior Notes	5.25%

Condensed_Consolidating_Financ3

Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Balance Sheets (Detail) (USD $)	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Current Assets:
Cash	$6,270		$934		$2,849		$5,091
Short-term investments	185,244		85,916
Accounts receivable - net	180,761		173,720
Inventories of spare parts - net	73,793		71,137
Prepaid expenses	9,314		8,357
Deferred income taxes	9,915		12,723
Income taxes receivable	1,227		1,871
Total current assets	466,524		354,658
Property and equipment, net	877,818		785,472
Restricted investments	15,485		14,685
Other assets	16,253		18,508
Total assets	1,376,080		1,173,323
Current Liabilities:
Accounts payable	27,700		36,874
Accrued and other current liabilities	52,812		54,531
Total current liabilities	80,512		91,405
Long-term debt	543,000		379,000
Deferred income taxes and other long-term liabilities	155,500		142,953
Shareholders' Equity:
Common stock and paid-in capital	303,082		298,480
Accumulated other comprehensive loss	-211		-24
Retained earnings	294,197		261,509
Total shareholders' equity	597,068		559,965		499,615		477,337
Total liabilities and shareholders' equity	1,376,080		1,173,323
Parent Company Only (issuer) [Member]
Current Assets:
Cash	51		52		552		4,313
Short-term investments	185,244		85,916
Accounts receivable - net	98,001		83,988
Intercompany receivable			129,026
Inventories of spare parts - net	65,341		71,023
Prepaid expenses	7,610		6,441
Deferred income taxes	9,915		12,723
Income taxes receivable	1,068		1,361
Total current assets	367,230		390,530
Investment in subsidiaries	358,080		112,273
Property and equipment, net	638,437		579,369
Restricted investments	15,485		14,685
Other assets	16,055		19,111
Total assets	1,395,287		1,115,968
Current Liabilities:
Accounts payable	22,578		31,232
Accrued and other current liabilities	34,477		31,330
Intercompany payable	95,270
Total current liabilities	152,325		62,562
Long-term debt	543,000		379,000
Deferred income taxes and other long-term liabilities	102,894		114,441
Shareholders' Equity:
Common stock and paid-in capital	303,082		298,480
Accumulated other comprehensive loss	-211		-24
Retained earnings	294,197		261,509
Total shareholders' equity	597,068		559,965
Total liabilities and shareholders' equity	1,395,287		1,115,968
Guarantor Subsidiaries [Member]
Current Assets:
Cash	6,219	[1],[2]	882	[1],[2]	2,297	[1],[2]	778	[1],[2]
Accounts receivable - net	82,760	[1]	89,732	[1]
Intercompany receivable	95,399	[1]
Inventories of spare parts - net	8,452	[1]	114	[1]
Prepaid expenses	1,704	[1]	1,916	[1]
Income taxes receivable	159	[1]	510	[1]
Total current assets	194,693	[1]	93,154	[1]
Property and equipment, net	239,381	[1]	206,103	[1]
Other assets	198	[1]	-603	[1]
Total assets	434,272	[1]	298,654	[1]
Current Liabilities:
Accounts payable	5,122	[1]	5,642	[1]
Accrued and other current liabilities	18,335	[1]	23,201	[1]
Intercompany payable			129,026	[1]
Total current liabilities	23,457	[1]	157,869	[1]
Deferred income taxes and other long-term liabilities	52,606	[1]	28,512	[1]
Shareholders' Equity:
Common stock and paid-in capital	137,647	[1]	2,674	[1]
Retained earnings	220,562	[1]	109,599	[1]
Total shareholders' equity	358,209	[1]	112,273	[1]
Total liabilities and shareholders' equity	434,272	[1]	298,654	[1]
Eliminations [Member]
Current Assets:
Intercompany receivable	-95,399		-129,026
Total current assets	-95,399		-129,026
Investment in subsidiaries	-358,080		-112,273
Total assets	-453,479		-241,299
Current Liabilities:
Intercompany payable	-95,270		-129,026
Total current liabilities	-95,270		-129,026
Shareholders' Equity:
Common stock and paid-in capital	-137,647		-2,674
Retained earnings	-220,562		-109,599
Total shareholders' equity	-358,209		-112,273
Total liabilities and shareholders' equity	($453,479)		($241,299)

[1]	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors' subsidiaries amounts.
[2]	Cash flows between the Parent Company and Guarantor Subsidiaries related to the Company's centralized cash management activities in 2013 and 2012 have been adjusted to show the effects on net cash provided by operating and financing activities.

Condensed_Consolidating_Financ4

Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Statements of Operations (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Condensed Income Statements, Captions [Line Items]
Operating revenues, net	$210,760	$216,294	$212,145	$197,071	$281,227	$200,762	$195,543	$178,968	$836,270		$856,500		$646,686
Expenses:
Direct expenses									670,007		713,090		543,524
Selling, general, and administrative expenses									43,171		38,820		39,051
Total operating expenses									713,178		751,910		582,575
(Gain) loss on disposition of assets, net	-523	56	242	1,073	529	1,399	14,701	-25	848		-16,604		317
Impairment of assets									10,508		1,648
Equity in loss of unconsolidated affiliate									96		262		863
Operating income									111,640		119,284		62,931
Interest expense									29,510		29,756		29,533
Loss on debt extinguishment									29,833
Other (income) expense, net									-818		-613		-651
Total expenses									58,525		29,143		28,882
Earnings before income taxes	11,651	28,277	21,700	-8,513	18,674	24,212	32,525	14,730	53,115		90,141		34,049
Income tax expense									20,427		31,185		15,992
Net earnings	7,392	17,249	13,368	-5,321	16,825	13,777	19,516	8,838	32,688		58,956		18,057
Parent Company Only (issuer) [Member]
Condensed Income Statements, Captions [Line Items]
Operating revenues, net									504,180		564,445		415,740
Expenses:
Direct expenses									411,398		468,321		355,689
Selling, general, and administrative expenses									32,985		29,885		31,384
Management fees											-11,682		-9,238
Total operating expenses									444,383		486,524		377,835
(Gain) loss on disposition of assets, net									848		-16,585		317
Impairment of assets									10,508		1,227
Equity in loss of unconsolidated affiliate									96		262		863
Operating income									48,345		93,017		36,725
Equity in net earnings of consolidated subsidiaries									-38,740		-15,567		-15,714
Interest expense									29,510		29,434		29,518
Loss on debt extinguishment									29,833
Other (income) expense, net									-819		-613		-651
Total expenses									19,784		13,254		13,153
Earnings before income taxes									28,561		79,763		23,572
Income tax expense									-4,127		20,807		5,515
Net earnings									32,688		58,956		18,057
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Operating revenues, net									332,090	[1]	292,055	[1]	230,946	[1]
Expenses:
Direct expenses									258,627	[1]	244,769	[1]	187,835	[1]
Selling, general, and administrative expenses									10,186	[1]	8,935	[1]	7,667	[1]
Management fees											11,682	[1]	9,238	[1]
Total operating expenses									268,813	[1]	265,386	[1]	204,740	[1]
(Gain) loss on disposition of assets, net											-19	[1]
Impairment of assets											421	[1]
Operating income									63,277	[1]	26,267	[1]	26,206	[1]
Interest expense											322	[1]	15	[1]
Other (income) expense, net									-17	[1]
Total expenses									-17	[1]	322	[1]	15	[1]
Earnings before income taxes									63,294	[1]	25,945	[1]	26,191	[1]
Income tax expense									24,554	[1]	10,378	[1]	10,477	[1]
Net earnings									38,740	[1]	15,567	[1]	15,714	[1]
Eliminations [Member]
Expenses:
Direct expenses									-18
Total operating expenses									-18
Operating income									18
Equity in net earnings of consolidated subsidiaries									38,740		15,567		15,714
Other (income) expense, net									18
Total expenses									38,758		15,567		15,714
Earnings before income taxes									-38,740		-15,567		-15,714
Net earnings									($38,740)		($15,567)		($15,714)

[1]	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors' subsidiaries amounts.

Condensed_Consolidating_Financ5

Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Statements of Comprehensive Income (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net earnings	$7,392	$17,249	$13,368	($5,321)	$16,825	$13,777	$19,516	$8,838	$32,688		$58,956		$18,057
Unrealized gain on short-term investments									-285		44		92
Other unrealized loss									24
Changes in pension plan assets and benefit obligations									17		-2		-22
Tax impact									105		-15		-28
Total comprehensive income									32,501		58,983		18,099
Parent Company Only (issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings									32,688		58,956		18,057
Unrealized gain on short-term investments									-285		44		92
Other unrealized loss									24
Changes in pension plan assets and benefit obligations									17		-2		-22
Tax impact									105		-15		-28
Total comprehensive income									32,501		58,983		18,099
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings									38,740	[1]	15,567	[1]	15,714	[1]
Total comprehensive income									38,740	[1]	15,567	[1]	15,714	[1]
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings									-38,740		-15,567		-15,714
Total comprehensive income									($38,740)		($15,567)		($15,714)

[1]	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors' subsidiaries amounts.

Condensed_Consolidating_Financ6

Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Statements of Cash Flows (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	$119,519		$105,096		$50,550
Investing activities:
Purchase of property and equipment	-157,690		-102,726		-128,475
Proceeds from asset dispositions	10,266		42,197		11,302
Purchase of short-term investments	-465,094		-375,503		-216,265
Proceeds from sale of short-term investments	363,110		338,970		249,041
Refund of deposits on aircraft	11,506		8,161		2,500
Payments of deposits on aircraft	-6,948		-9,318		-8,717
Loan to unconsolidated affiliate	-200				-975
Other	-200				-50
Net cash used in investing activities	-245,050		-98,219		-91,639
Financing activities:
Proceeds from issuance of Senior Notes due 2019	500,000
Repayment of Senior Notes due 2018	-300,000
Premium and cost to retire debt early	-26,749
Debt issuance costs	-6,232
Proceeds from line of credit	264,253		164,771		127,323
Payments on line of credit	-300,253		-172,526		-86,615
Repurchase of common stock	-152		-1,037		-1,861
Net cash provided by (used in) financing activities	130,867		-8,792		38,847
(Decrease) increase in cash	5,336		-1,915		-2,242
Cash, beginning of year	934		2,849		5,091
Cash, end of year	6,270		934		2,849
Parent Company Only (issuer) [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	51,476		82,660		15,781
Investing activities:
Purchase of property and equipment	-157,690		-102,726		-128,475
Proceeds from asset dispositions	10,266		42,197		11,302
Purchase of short-term investments	-465,094		-375,503		-216,265
Proceeds from sale of short-term investments	363,110		338,970		249,041
Refund of deposits on aircraft	11,506		8,161		2,500
Payments of deposits on aircraft	-6,948		-9,318		-8,717
Loan to unconsolidated affiliate					-975
Other	-200				-50
Net cash used in investing activities	-245,050		-98,219		-91,639
Financing activities:
Proceeds from issuance of Senior Notes due 2019	500,000
Repayment of Senior Notes due 2018	-300,000
Premium and cost to retire debt early	-26,749
Debt issuance costs	-6,232
Proceeds from line of credit	264,253		164,771		127,323
Payments on line of credit	-300,253		-172,526		-86,615
Repurchase of common stock	-152		-1,037		-1,861
Due to/from affiliate, net	-62,706		23,851		33,250
Net cash provided by (used in) financing activities	193,573		15,059		72,097
(Decrease) increase in cash	-1		-500		-3,761
Cash, beginning of year	52		552		4,313
Cash, end of year	51		52		552
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	68,043	[1],[2]	22,436	[1],[2]	34,769	[1],[2]
Financing activities:
Due to/from affiliate, net	62,706	[1],[2]	-23,851	[1],[2]	-33,250	[1],[2]
Net cash provided by (used in) financing activities	-62,706	[1],[2]	-23,851	[1],[2]	-33,250	[1],[2]
(Decrease) increase in cash	5,337	[1],[2]	-1,415	[1],[2]	1,519	[1],[2]
Cash, beginning of year	882	[1],[2]	2,297	[1],[2]	778	[1],[2]
Cash, end of year	$6,219	[1],[2]	$882	[1],[2]	$2,297	[1],[2]

[1]	Foreign subsidiaries represent minor subsidiaries and are included in the guarantors' subsidiaries amounts.
[2]	Cash flows between the Parent Company and Guarantor Subsidiaries related to the Company's centralized cash management activities in 2013 and 2012 have been adjusted to show the effects on net cash provided by operating and financing activities.

Schedule_II_Valuation_and_Qual1

Schedule II - Valuation and Qualifying Consolidated Accounts (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts, Current [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$1,001	$50		$50
Additions Charged to Costs and Expenses	350	951
Balance at End of Year	1,351	1,001		50
Allowance for inventory [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	12,292	12,361	12,319
Additions Charged to Costs and Expenses	1,225		42
Deductions		69
Balance at End of Year	13,517	12,292	12,361
Allowance for contractual discounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	74,711	50,389	39,591
Additions Charged to Costs and Expenses	408,362	312,927	258,889
Deductions	386,483	288,605	248,091
Balance at End of Year	96,590	74,711	50,389
Allowance for uncompensated care [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	46,387	52,168	37,734
Additions Charged to Costs and Expenses	79,564	71,011	69,910
Deductions	84,093	76,792	55,476
Balance at End of Year	$41,858	$46,387	$52,168