Regional Management (RM) 10-Q 6 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 03, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	RM
Entity Registrant Name	Regional Management Corp.
Entity Central Index Key	1,519,401
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		11,790,357

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets
Cash	$ 2,799	$ 5,230
Gross finance receivables	1,121,711	1,066,650
Unearned finance charges and insurance premiums	(274,473)	(249,187)
Finance receivables	847,238	817,463
Allowance for credit losses	(48,450)	(48,910)
Net finance receivables	798,788	768,553
Restricted cash	26,356	16,787
Property and equipment	12,072	12,294
Intangible assets	10,785	10,607
Other assets	17,420	16,012
Total assets	868,220	829,483
Liabilities
Long-term debt	595,765	571,496
Unamortized debt issuance costs	(7,437)	(4,950)
Net long-term debt	588,328	566,546
Accounts payable and accrued expenses	17,526	18,565
Deferred tax liability	3,832	4,961
Total liabilities	609,686	590,072
Commitments and Contingencies (Note 10)
Stockholders' equity:
Preferred stock ($0.10 par value, 100,000 shares authorized, no shares issued or outstanding)
Common stock ($0.10 par value, 1,000,000 shares authorized, 13,334 shares issued and 11,788 shares outstanding at June 30, 2018 and 13,205 shares issued and 11,659 shares outstanding at December 31, 2017)	1,333	1,321
Additional paid-in-capital	96,369	94,384
Retained earnings	185,878	168,752
Treasury stock (1,546 shares at June 30, 2018 and December 31, 2017)	(25,046)	(25,046)
Total stockholders' equity	258,534	239,411
Total liabilities and stockholders' equity	868,220	829,483
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Cash	120	70
Finance receivables	232,354	137,239
Allowance for credit losses	(9,929)	(7,129)
Restricted cash	19,700	10,734
Other assets	110	119
Total assets	242,355	141,033
Liabilities
Net long-term debt	206,962	116,658
Accounts payable and accrued expenses	44	53
Total liabilities	$ 207,006	$ 116,711

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	13,334,000	13,205,000
Common stock, shares outstanding	11,788,000	11,659,000
Treasury stock, shares	1,546,000	1,546,000

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue
Interest and fee income	$ 66,829	$ 59,787	$ 132,980	$ 119,042
Insurance income, net	2,882	3,085	6,271	6,890
Other income	2,705	2,466	5,790	5,226
Total revenue	72,416	65,338	145,041	131,158
Expenses
Provision for credit losses	20,203	18,589	39,718	37,723
Personnel	19,390	18,387	40,618	36,555
Occupancy	5,478	5,419	11,096	10,704
Marketing	2,258	1,779	3,711	2,984
Other	6,089	6,057	12,382	12,853
Total general and administrative expenses	33,215	31,642	67,807	63,096
Interest expense	7,915	5,221	15,092	10,434
Income before income taxes	11,083	9,886	22,424	19,905
Income taxes	2,601	3,751	5,298	6,136
Net income	$ 8,482	$ 6,135	$ 17,126	$ 13,769
Net income per common share:
Basic	$ 0.73	$ 0.53	$ 1.47	$ 1.19
Diluted	$ 0.70	$ 0.52	$ 1.42	$ 1.17
Weighted average shares outstanding:
Basic	11,658	11,554	11,638	11,524
Diluted	12,138	11,730	12,084	11,723

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in-Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Beginning Balance at Dec. 31, 2016	$ 207,475	$ 1,300	$ 92,432	$ 138,789	$ (25,046)
Beginning Balance, shares at Dec. 31, 2016		12,996
Issuance of restricted stock awards		$ 7	(7)
Issuance of restricted stock awards, shares		74
Exercise of stock options	334	$ 29	305
Exercise of stock options, shares		289
Shares withheld related to net share settlement	(2,021)	$ (15)	(2,006)
Shares withheld related to net share settlement, shares		(154)
Share-based compensation	3,660		3,660
Net income	29,963			29,963
Ending Balance at Dec. 31, 2017	239,411	$ 1,321	94,384	168,752	(25,046)
Ending Balance, shares at Dec. 31, 2017		13,205
Issuance of restricted stock awards		$ 10	(10)
Issuance of restricted stock awards, shares		97
Exercise of stock options	$ 8	$ 8
Exercise of stock options, shares	89	89
Shares withheld related to net share settlement	$ (515)	$ (6)	(509)
Shares withheld related to net share settlement, shares		(57)
Share-based compensation	2,504		2,504
Net income	17,126			17,126
Ending Balance at Jun. 30, 2018	$ 258,534	$ 1,333	$ 96,369	$ 185,878	$ (25,046)
Ending Balance, shares at Jun. 30, 2018		13,334

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 17,126	$ 13,769
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	39,718	37,723
Depreciation and amortization	4,071	3,231
Loss on disposal of property and equipment	50	92
Share-based compensation	3,369	2,090
Fair value adjustment on interest rate caps	(139)	49
Deferred income taxes, net	(1,129)	(1,743)
Changes in operating assets and liabilities:
Increase in other assets	(1,271)	(1,814)
Decrease in accounts payable and accrued expenses	(1,705)	(1,770)
Net cash provided by operating activities	60,090	51,627
Cash flows from investing activities:
Net originations of finance receivables	(69,954)	(45,965)
Purchases of intangible assets	(1,183)	(3,064)
Purchases of property and equipment	(1,667)	(2,228)
Proceeds from disposal of property and equipment		558
Net cash used in investing activities	(72,804)	(50,699)
Cash flows from financing activities:
Net payments on senior revolving credit facility	(68,889)	(6,256)
Payments on amortizing loan	(20,487)	(12,406)
Net advances (payments) on revolving warehouse credit facility	(36,374)	24,032
Advances on securitization	150,000
Payments for debt issuance costs	(3,711)	(3,086)
Taxes paid related to net share settlement of equity awards	(687)	(1,647)
Net cash provided by financing activities	19,852	637
Net change in cash and restricted cash	7,138	1,565
Cash and restricted cash at beginning of period	22,017	12,743
Cash and restricted cash at end of period	29,155	14,308
Supplemental cash flow information
Interest paid	14,249	8,662
Income taxes paid	$ 5,543	$ 10,105

Consolidated Statements of Cas7

Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Cash	$ 2,799	$ 5,230	$ 3,678	$ 4,446
Restricted cash	26,356	16,787	10,630	8,297
Total cash and restricted cash	$ 29,155	$ 22,017	$ 14,308	$ 12,743

Nature of Business

Nature of Business	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Note 1. Nature of Business Regional Management Corp. (the “ Company The Company’s loan volume and contractual delinquency follow seasonal trends. Demand for the Company’s small and large loans is typically highest during the second, third, and fourth quarters, which the Company believes is largely due to customers borrowing money for vacation, back-to-school,

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Note 2. Basis of Presentation and Significant Accounting Policies Basis of presentation: 10-Q SEC GAAP 10-Q 10-K Significant accounting policies: Principles of consolidation: VIE Variable interest entities: SPE The SPEs’ debt arrangements are structured to provide enhancements to the lenders and investors, including in the form of overcollateralization (the principal balance of the collateral exceeds the balance of the debt) and reserve funds (restricted cash held by the SPEs). These enhancements, along with the isolated finance receivables pools, increase the creditworthiness of the SPEs above that of the Company as a whole. This increases the marketability of the Company’s collateral for borrowing purposes, leading to more favorable borrowing terms, improved interest rate risk management, and additional flexibility to grow the business. The SPEs are considered VIEs under GAAP and are consolidated into the financial statements of their primary beneficiary. The Company is considered to be the primary beneficiary of the SPEs because it has (i) power over the significant activities through its role as servicer of the finance receivables under each debt arrangement and (ii) the obligation to absorb losses or the right to receive returns that could be significant through the Company’s interest in the monthly residual cash flows of the SPEs after each debt is paid. Consolidation of VIEs results in these transactions being accounted for as secured borrowings; therefore, the pooled receivables and the related debts remain on the consolidated balance sheet of the Company. Each debt is secured solely by the assets of the VIEs and not by any other assets of the Company. The assets of the VIEs are the only source of funds for repayment on each debt, and restricted cash held by the VIEs can only be used to support payments on the debt. The Company recognizes revenue and provision for credit losses on the finance receivables of the VIEs and interest expense on the related secured debt. Use of estimates: Material estimates that are particularly susceptible to change relate to the determination of the allowance for credit losses, the fair value of share-based compensation, the valuation of deferred tax assets and liabilities, contingent liabilities on litigation matters, and the allocation of the purchase price to assets acquired in business combinations. Reclassifications: Recent accounting pronouncements: FASB In February 2016, the FASB issued an accounting update to increase transparency and comparability of accounting for lease transactions. The update requires all leases to be recognized on the balance sheet as lease assets and lease liabilities and requires both quantitative and qualitative disclosures regarding key information about leasing arrangements. All of the Company’s leases are currently classified as operating leases, with no lease assets or lease liabilities recorded. The update is effective for annual and interim periods beginning after December 15, 2018, and early adoption is permitted. The implementation of the accounting update will create lease assets and lease liabilities and have an impact on the Company’s debt covenants. The Company is working with its lenders to address any issues before implementation and continues to evaluate and quantify the potential impacts of this update on its consolidated financial statements. In June 2016, the FASB issued an accounting update to change the impairment model for estimating credit losses on financial assets. The current incurred loss impairment model requires the recognition of credit losses when it is probable that a loss has been incurred. The incurred loss model will be replaced by an expected loss model, which requires entities to estimate the lifetime expected credit loss on such instruments and to record an allowance to offset the amortized cost basis of the financial asset. This update is effective for annual and interim periods beginning after December 15, 2019, and early adoption is permitted. The Company believes the implementation of the accounting update will have a material adverse effect on the Company’s consolidated financial statements and is in the process of quantifying the potential impacts. In August 2016, the FASB issued an accounting update to provide specific guidance on certain cash flow classification issues to reduce diversity in practice. These issues include debt prepayment or extinguishment costs, contingent consideration payments after business combinations, beneficial interest in securitization transactions, and proceeds from insurance claims. This update is effective for annual and interim periods beginning after December 15, 2017, and early adoption was permitted. The Company adopted the new standard effective in 2018, and implementation of the accounting update had no impact on the Company’s consolidated financial statements. In November 2016, the FASB issued an accounting update to address diversity in the classification of restricted cash transfers on the statement of cash flows. The amendment requires that the statements of cash flows explain the change during the period in the total of cash, cash equivalents, restricted cash, and restricted cash equivalents. This update is effective for annual and interim periods beginning after December 15, 2017, and early adoption was permitted. The Company adopted the new standard effective in 2018. As a result, the Company no longer reports the changes in restricted cash as an investing activity. Instead, restricted cash is included in the beginning and ending cash balances on the consolidated statements of cash flows.

Finance Receivables, Credit Qua

Finance Receivables, Credit Quality Information, and Allowance for Credit Losses	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Finance Receivables, Credit Quality Information, and Allowance for Credit Losses	Note 3. Finance Receivables, Credit Quality Information, and Allowance for Credit Losses Finance receivables for the periods indicated consisted of the following: In thousands June 30, 2018 December 31, 2017 Small loans $ 384,690 $ 375,772 Large loans 392,101 347,218 Automobile loans 39,414 61,423 Retail loans 31,033 33,050 Finance receivables $ 847,238 $ 817,463 The contractual delinquency of the finance receivable portfolio by product and aging for the periods indicated are as follows: June 30, 2018 Small Large Automobile Retail Total In thousands $ % $ % $ % $ % $ % Current $ 316,058 82.1 % $ 335,842 85.7 % $ 28,040 71.1 % $ 24,830 80.0 % $ 704,770 83.1 % 1 to 29 days past due 40,285 10.5 % 36,659 9.3 % 8,465 21.5 % 4,101 13.2 % 89,510 10.6 % Delinquent accounts 30 to 59 days 9,601 2.5 % 7,441 1.9 % 1,131 2.9 % 713 2.4 % 18,886 2.3 % 60 to 89 days 6,389 1.7 % 4,667 1.2 % 567 1.4 % 480 1.5 % 12,103 1.4 % 90 to 119 days 4,591 1.2 % 2,922 0.8 % 534 1.4 % 326 1.0 % 8,373 1.0 % 120 to 149 days 3,770 1.0 % 2,431 0.6 % 374 0.9 % 282 0.9 % 6,857 0.8 % 150 to 179 days 3,996 1.0 % 2,139 0.5 % 303 0.8 % 301 1.0 % 6,739 0.8 % Total delinquency $ 28,347 7.4 % $ 19,600 5.0 % $ 2,909 7.4 % $ 2,102 6.8 % $ 52,958 6.3 % Total finance receivables $ 384,690 100.0 % $ 392,101 100.0 % $ 39,414 100.0 % $ 31,033 100.0 % $ 847,238 100.0 % Finance receivables in nonaccrual status $ 14,835 3.9 % $ 9,612 2.5 % $ 1,841 4.7 % $ 1,002 3.2 % $ 27,290 3.2 % December 31, 2017 Small Large Automobile Retail Total In thousands $ % $ % $ % $ % $ % Current $ 301,114 80.1 % $ 299,467 86.3 % $ 43,140 70.2 % $ 25,730 77.8 % $ 669,451 81.9 % 1 to 29 days past due 39,412 10.5 % 29,211 8.4 % 13,387 21.8 % 4,523 13.7 % 86,533 10.6 % Delinquent accounts 30 to 59 days 9,738 2.6 % 5,949 1.6 % 2,162 3.6 % 879 2.7 % 18,728 2.2 % 60 to 89 days 8,755 2.3 % 4,757 1.4 % 1,046 1.7 % 739 2.2 % 15,297 1.9 % 90 to 119 days 6,881 1.9 % 3,286 1.0 % 701 1.1 % 471 1.5 % 11,339 1.4 % 120 to 149 days 5,284 1.4 % 2,537 0.7 % 636 1.0 % 408 1.2 % 8,865 1.1 % 150 to 179 days 4,588 1.2 % 2,011 0.6 % 351 0.6 % 300 0.9 % 7,250 0.9 % Total delinquency $ 35,246 9.4 % $ 18,540 5.3 % $ 4,896 8.0 % $ 2,797 8.5 % $ 61,479 7.5 % Total finance receivables $ 375,772 100.0 % $ 347,218 100.0 % $ 61,423 100.0 % $ 33,050 100.0 % $ 817,463 100.0 % Finance receivables in nonaccrual status $ 19,634 5.2 % $ 9,753 2.8 % $ 2,461 4.0 % $ 1,339 4.1 % $ 33,187 4.1 % Changes in the allowance for credit losses for the periods indicated are as follows: Three Months Ended June 30, Six Months Ended June 30, In thousands 2018 2017 2018 2017 Balance at beginning of period $ 47,750 $ 41,000 $ 48,910 $ 41,250 Provision for credit losses 20,203 18,589 39,718 37,723 Credit losses (20,666 ) (19,003 ) (42,686 ) (39,997 ) Recoveries 1,163 1,414 2,508 3,024 Balance at end of period $ 48,450 $ 42,000 $ 48,450 $ 42,000 In September 2017, the Company recorded a $3.0 million increase to the allowance for credit losses related to estimated incremental credit losses on customer accounts impacted by hurricanes. As of June 30, 2018, the allowance for credit losses no longer requires or includes an incremental hurricane allowance. The following is a reconciliation of the allowance for credit losses by product for the periods indicated: In thousands Balance 2018 Provision Credit Losses Recoveries Balance Finance Allowance as Small loans $ 23,366 $ 12,720 $ (12,782 ) $ 665 $ 23,969 $ 384,690 6.2 % Large loans 18,589 6,784 (6,002 ) 327 19,698 392,101 5.0 % Automobile loans 3,316 64 (873 ) 135 2,642 39,414 6.7 % Retail loans 2,479 635 (1,009 ) 36 2,141 31,033 6.9 % Total $ 47,750 $ 20,203 $ (20,666 ) $ 1,163 $ 48,450 $ 847,238 5.7 % In thousands Balance 2017 Provision Credit Losses Recoveries Balance 2017 Finance Allowance as Small loans $ 20,575 $ 11,082 $ (11,542 ) $ 795 $ 20,910 $ 348,742 6.0 % Large loans 12,675 6,124 (5,023 ) 224 14,000 267,921 5.2 % Automobile loans 5,775 825 (1,724 ) 334 5,210 79,861 6.5 % Retail loans 1,975 558 (714 ) 61 1,880 30,243 6.2 % Total $ 41,000 $ 18,589 $ (19,003 ) $ 1,414 $ 42,000 $ 726,767 5.8 % In thousands Balance Provision Credit Losses Recoveries Balance Finance Allowance as Small loans $ 24,749 $ 24,003 $ (26,156 ) $ 1,373 $ 23,969 $ 384,690 6.2 % Large loans 17,548 13,663 (12,198 ) 685 19,698 392,101 5.0 % Automobile loans 4,025 585 (2,340 ) 372 2,642 39,414 6.7 % Retail loans 2,588 1,467 (1,992 ) 78 2,141 31,033 6.9 % Total $ 48,910 $ 39,718 $ (42,686 ) $ 2,508 $ 48,450 $ 847,238 5.7 % In thousands Balance 2017 Provision Credit Losses Recoveries Balance 2017 Finance Allowance as Small loans $ 21,770 $ 22,245 $ (24,744 ) $ 1,639 $ 20,910 $ 348,742 6.0 % Large loans 11,460 11,727 (9,652 ) 465 14,000 267,921 5.2 % Automobile loans 5,910 2,563 (4,056 ) 793 5,210 79,861 6.5 % Retail loans 2,110 1,188 (1,545 ) 127 1,880 30,243 6.2 % Total $ 41,250 $ 37,723 $ (39,997 ) $ 3,024 $ 42,000 $ 726,767 5.8 % Impaired finance receivables as a percentage of total finance receivables were 2.4% and 2.1% as of June 30, 2018 and December 31, 2017, respectively. The following is a summary of finance receivables evaluated for impairment for the periods indicated: June 30, 2018 In thousands Small Large Automobile Retail Total Impaired receivables specifically evaluated $ 6,291 $ 12,553 $ 1,422 $ 115 $ 20,381 Finance receivables evaluated collectively 378,399 379,548 37,992 30,918 826,857 Finance receivables outstanding $ 384,690 $ 392,101 $ 39,414 $ 31,033 $ 847,238 Impaired receivables in nonaccrual status $ 541 $ 973 $ 143 $ 29 $ 1,686 Amount of the specific reserve for impaired accounts $ 1,729 $ 3,101 $ 280 $ 22 $ 5,132 Amount of the general component of the allowance $ 22,240 $ 16,597 $ 2,362 $ 2,119 $ 43,318 December 31, 2017 In thousands Small Large Automobile Retail Total Impaired receivables specifically evaluated $ 5,094 $ 10,303 $ 1,724 $ 109 $ 17,230 Finance receivables evaluated collectively 370,678 336,915 59,699 32,941 800,233 Finance receivables outstanding $ 375,772 $ 347,218 $ 61,423 $ 33,050 $ 817,463 Impaired receivables in nonaccrual status $ 707 $ 931 $ 129 $ 31 $ 1,798 Amount of the specific reserve for impaired accounts $ 1,190 $ 2,183 $ 373 $ 20 $ 3,766 Amount of the general component of the allowance $ 23,559 $ 15,365 $ 3,652 $ 2,568 $ 45,144 The average recorded investment in impaired finance receivables and the amount of interest income recognized on impaired loans for the periods indicated are as follows: Three Months Ended June 30, 2018 2017 (1) In thousands Average Interest Income Average Small loans $ 6,272 $ 342 $ 3,810 Large loans 12,318 486 7,851 Automobile loans 1,512 17 2,201 Retail loans 105 2 111 Total $ 20,207 $ 847 $ 13,973 Six Months Ended June 30, 2018 2017 (1) In thousands Average Interest Income Average Small loans $ 5,868 $ 666 $ 3,351 Large loans 11,693 932 7,406 Automobile loans 1,589 65 2,286 Retail loans 101 9 106 Total $ 19,251 $ 1,672 $ 13,149 (1) It was not practical to compute the amount of interest income recognized on impaired loans prior to fiscal year 2018.

Interest Rate Caps

Interest Rate Caps	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest Rate Caps	Note 4. Interest Rate Caps The Company has purchased interest rate cap contracts with an aggregate notional principal amount of $400.0 million. Each contract contains a strike rate against the one-month one-month one-month Three Months Ended Six Months Ended In thousands 2018 2017 2018 2017 Balance at beginning of period $ 219 $ 27 $ 98 $ 62 Purchases 481 100 481 100 Fair value adjustment included in interest expense 18 (14 ) 139 (49 ) Balance at end of period, included in other assets $ 718 $ 113 $ 718 $ 113

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Long-Term Debt	Note 5. Long-Term Debt The following is a summary of the Company’s long-term debt as of the periods indicated: June 30, 2018 December 31, 2017 In thousands Long-Term Unamortized Net Long-Term Long-Term Unamortized Net Long-Term Senior revolving credit facility $ 383,180 $ (1,814 ) $ 381,366 $ 452,050 $ (2,162 ) $ 449,888 Amortizing loan 32,893 (344 ) 32,549 53,380 (547 ) 52,833 Revolving warehouse credit facility 29,692 (1,925 ) 27,767 66,066 (2,241 ) 63,825 RMIT 2018-1 securitization 150,000 (3,354 ) 146,646 — — — Total $ 595,765 $ (7,437 ) $ 588,328 $ 571,496 $ (4,950 ) $ 566,546 Unused amount of revolving credit facilities (subject to borrowing base) $ 375,128 $ 244,884 Senior Revolving Credit Facility: Variable Interest Entity Debt: These long-term debts are supported by the expected cash flows from the underlying collateralized finance receivables. Collections on these finance receivables are remitted to restricted cash collection accounts, which totaled $16.4 million and $8.6 million as of June 30, 2018 and December 31, 2017, respectively. Cash inflows from the finance receivables are distributed to the lenders/investors, the service providers, and/or the residual interest that the Company owns in accordance with a monthly contractual priority of payments. The SPEs pay a servicing fee to the Company which is eliminated in consolidation. Distributions from the SPEs to the Company are permitted under the debt arrangements. At each sale of receivables from the Company’s affiliates to the SPEs, the Company makes certain representations and warranties about the quality and nature of the collateralized receivables. The debt arrangements require the Company to repurchase the receivables in certain circumstances, including circumstances in which the representations and warranties made by the Company concerning the quality and characteristics of the receivables are inaccurate. Assets transferred to each SPE are legally isolated from the Company and its affiliates, as well as the claims of the Company’s and its affiliates’ creditors. Further, the assets of each SPE are owned by such SPE and are not available to satisfy the debts or other obligations of the Company or any of its affiliates. Amortizing Loan: RMR I Revolving Warehouse Credit Facility: RMR II RMIT 2018 -1 Securitization: RMR III RMIT 2018-1 The carrying amounts of consolidated VIE assets and liabilities are as follows: In thousands June 30, 2018 December 31, 2017 Assets Cash $ 120 $ 70 Finance receivables 232,354 137,239 Allowance for credit losses (9,929 ) (7,129 ) Restricted cash 19,700 10,734 Other assets 110 119 Total assets $ 242,355 $ 141,033 Liabilities Net long-term debt $ 206,962 $ 116,658 Accounts payable and accrued expenses 44 53 Total liabilities $ 207,006 $ 116,711 The Company’s debt arrangements are subject to certain covenants, including monthly and annual reporting, maintenance of specified interest coverage and debt ratios, restrictions on distributions, limitations on other indebtedness, maintenance of a minimum allowance for credit losses, and certain other restrictions. At June 30, 2018, the Company was in compliance with all debt covenants.

Disclosure About Fair Value of

Disclosure About Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Disclosure About Fair Value of Financial Instruments	Note 6. Disclosure About Fair Value of Financial Instruments The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value: Cash and restricted cash: Finance receivables: Interest rate caps: Repossessed assets: Long-term debt: The carrying amount and estimated fair values of the Company’s financial instruments summarized by level are as follows: June 30, 2018 December 31, 2017 In thousands Carrying Estimated Carrying Estimated Assets Level 1 inputs Cash $ 2,799 $ 2,799 $ 5,230 $ 5,230 Restricted cash 26,356 26,356 16,787 16,787 Level 2 inputs Interest rate caps 718 718 98 98 Level 3 inputs Net finance receivables 798,788 798,788 768,553 768,553 Repossessed assets 208 208 431 431 Liabilities Level 3 inputs Long-term debt 595,765 595,765 571,496 571,496 Certain of the Company’s assets carried at fair value are classified and disclosed in one of the following three categories: 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. In determining the appropriate levels, the Company performs an analysis of the assets and liabilities that are carried at fair value. At each reporting period, all assets and liabilities for which the fair value measurement is based on significant unobservable inputs are classified as Level 3.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 7. Income Taxes Income tax expense differed from the amount computed by applying the federal income tax rate to total income before income taxes as a result of the following: Three Months Ended June 30, 2018 2017 In thousands $ % $ % Federal tax expense at statutory rate $ 2,327 21.0 % $ 3,460 35.0 % Increase (reduction) in income taxes resulting from: State tax, net of federal benefit 389 3.5 % 278 2.8 % Excess tax benefits from share-based awards (170 ) (1.5 )% (36 ) (0.4 )% Other 55 0.5 % 49 0.5 % $ 2,601 23.5 % $ 3,751 37.9 % Six Months Ended June 30, 2018 2017 In thousands $ % $ % Federal tax expense at statutory rate $ 4,709 21.0 % $ 6,967 35.0 % Increase (reduction) in income taxes resulting from: State tax, net of federal benefit 768 3.4 % 524 2.6 % Excess tax benefits from share-based awards (308 ) (1.4 )% (1,488 ) (7.5 )% Other 129 0.6 % 133 0.7 % $ 5,298 23.6 % $ 6,136 30.8 % In December 2017, the Tax Cuts and Jobs Act (the “ Tax Act As of December 31, 2017, the Company was required to revalue deferred tax assets and liabilities at the enacted rate as a result of the Tax Act. Due to the timing of the enactment and the complexity involved in applying the provisions of the Tax Act, the Company made reasonable estimates of the effects of the Tax Act and recorded provisional amounts in its consolidated financial statements as of December 31, 2017. As the Company collects and prepares necessary data and interprets the Tax Act and any additional guidance issued by the U.S. Treasury Department, the Internal Revenue Service, the SEC, and other standard-setting bodies, it may make adjustments to the provisional amounts. The accounting for the tax effects of the Tax Act will be completed in 2018. Pursuant to the adoption of an accounting standard update issued in March 2016 and effective beginning in fiscal year 2017, the Company recognizes the tax benefits or deficiencies from the exercise or vesting of share-based awards in the income tax line of the consolidated statements of income. These tax benefits and deficiencies were previously recognized within additional paid-in-capital

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Note 8. Earnings Per Share The following schedule reconciles the computation of basic and diluted earnings per share for the periods indicated: Three Months Ended Six Months Ended In thousands, except per share amounts 2018 2017 2018 2017 Numerator: Net income $ 8,482 $ 6,135 $ 17,126 $ 13,769 Denominator: Weighted average shares outstanding for basic earnings per share 11,658 11,554 11,638 11,524 Effect of dilutive securities 480 176 446 199 Weighted average shares adjusted for dilutive securities 12,138 11,730 12,084 11,723 Earnings per share: Basic $ 0.73 $ 0.53 $ 1.47 $ 1.19 Diluted $ 0.70 $ 0.52 $ 1.42 $ 1.17 Options to purchase 138 thousand and 249 thousand shares of common stock were outstanding during the three and six months ended June 30, 2018 and 2017, respectively, but were not included in the computation of diluted earnings per share because they were anti-dilutive.

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Note 9. Share-Based Compensation The Company previously adopted the 2007 Management Incentive Plan (the “ 2007 Plan 2011 Plan 2015 Plan re-approved For the three months ended June 30, 2018 and 2017, the Company recorded share-based compensation expense of $1.8 million and $1.3 million, respectively. The Company recorded $3.4 million and $2.1 million in share-based compensation for the six months ended June 30, 2018 and 2017, respectively. As of June 30, 2018, unrecognized share-based compensation expense to be recognized over future periods approximated $10.3 million. This amount will be recognized as expense over a weighted-average period of 2.0 years. Share-based compensation expenses are recognized on a straight-line basis over the requisite service period of the agreement. All share-based compensation is classified as equity awards except for cash-settled performance units, which are classified as liabilities. The Company allows for the settlement of share-based awards on a net share basis. With net share settlement, the employee does not surrender any cash or shares upon the exercise of stock options or the vesting of stock awards or stock units. Rather, the Company withholds the number of shares with a value equivalent to the option exercise price (for stock options) and the statutory tax withholding (for all share-based awards). Net share settlements have the effect of reducing the number of shares that would have otherwise been issued as a result of exercise or vesting. Long-term incentive program: RSUs CSPUs Board In 2016, the Company introduced a key team member incentive program for certain other members of senior management. Recurring annual participation in the program is at the discretion of the Board and executive management. Each participant in the program is eligible to earn a restricted stock award, subject to performance over a one-year one-year two-year Inducement and retention program: Non-employee non-employee The following are the terms and amounts of the awards issued under the Company’s share-based incentive programs: Nonqualified stock options: The fair value of option grants is estimated on the grant date using the Black-Scholes option-pricing model with the following weighted-average assumptions for option grants during the periods indicated below: Six Months Ended 2018 2017 Expected volatility 41.63 % 43.95 % Expected dividends 0.00 % 0.00 % Expected term (in years) 5.99 5.96 Risk-free rate 2.66 % 2.09 % Expected volatility is based on the Company’s historical stock price volatility. The expected term is calculated by using the simplified method (average of the vesting and original contractual terms) due to insufficient historical data to estimate the expected term. The risk-free rate is based on the zero coupon U.S. Treasury bond rate over the expected term of the awards. The following table summarizes the stock option activity for the six months ended June 30, 2018: In thousands, except per share amounts Number of Weighted-Average Exercise Price Weighted-Average Aggregate Options outstanding at January 1, 2018 958 $ 17.39 Granted 112 28.25 Exercised (89 ) 16.62 Forfeited — — Expired — — Options outstanding at June 30, 2018 981 $ 18.69 7.1 $ 16,007 Options exercisable at June 30, 2018 703 $ 17.03 6.5 $ 12,639 The following table provides additional stock option information for the periods indicated: Three Months Ended Six Months Ended In thousands, except per share amounts 2018 2017 2018 2017 Weighted-average grant date fair value per share $ — $ 8.72 $ 12.39 $ 8.90 Intrinsic value of options exercised $ 574 $ 78 $ 1,604 $ 4,802 Fair value of stock options that vested $ — $ 258 $ 199 $ 559 Performance-contingent restricted stock units: The following table summarizes RSU activity during the six months ended June 30, 2018: In thousands, except per unit amounts Units Weighted-Average Fair Value Per Unit Non-vested 201 $ 17.33 Granted 59 28.25 Vested — — Forfeited (78 ) 14.92 Non-vested 182 $ 21.89 The following table provides additional RSU information for the periods indicated: Three Months Ended Six Months Ended 2018 2017 2018 2017 Weighted-average grant date fair value per unit $ — $ — $ 28.25 $ 19.99 Cash-settled performance units: The following table summarizes CSPU activity during the six months ended June 30, 2018: In thousands, except per unit amounts Units Weighted-Average Fair Value Per Unit Non-vested 3,484 $ 1.00 Granted 1,660 1.00 Vested — — Forfeited (1,162 ) 1.00 Non-vested 3,982 $ 1.00 Restricted stock awards: The following table summarizes restricted stock activity during the six months ended June 30, 2018: In thousands, except per share amounts Shares Weighted-Average Fair Value Per Share Non-vested 53 $ 19.36 Granted 98 24.70 Vested (34 ) 21.09 Forfeited — — Non-vested 117 $ 23.33 The following table provides additional restricted stock information: Three Months Ended Six Months Ended In thousands, except per share amounts 2018 2017 2018 2017 Weighted-average grant date fair value per share $ 34.39 $ 20.88 $ 24.70 $ 18.38 Fair value of restricted stock awards that vested $ 651 $ 345 $ 711 $ 390

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 10. Commitments and Contingencies In the normal course of business, the Company has been named as a defendant in legal actions in connection with its activities. Some of the actual or threatened legal actions include claims for compensatory and punitive damages or claims for indeterminate amounts of damages. The Company contests liability and the amount of damages, as appropriate, in each pending matter. Where available information indicates that it is probable that a liability has been incurred and the Company can reasonably estimate the amount of that loss, the Company accrues the estimated loss by a charge to net income. As of June 30, 2018, the Company had accrued $0.2 million for these matters. However, in many legal actions, it is inherently difficult to determine whether any loss is probable, or even reasonably possible, or to estimate the amount of loss. This is particularly true for actions that are in their early stages of development or where plaintiffs seek indeterminate damages. In addition, even where a loss is reasonably possible or an exposure to loss exists in excess of the liability already accrued, it is not always possible to reasonably estimate the size of the possible loss or range of loss. Before a loss, additional loss, range of loss, or range of additional loss can be reasonably estimated for any given action, numerous issues may need to be resolved, including through lengthy discovery, following determination of important factual matters, and/or by addressing novel or unsettled legal questions. For certain other legal actions, the Company can estimate reasonably possible losses, additional losses, ranges of loss, or ranges of additional loss in excess of amounts accrued, but the Company does not believe, based on current knowledge and after consultation with counsel, that such losses will have a material adverse effect on the consolidated financial statements. While the Company will continue to identify legal actions where it believes a material loss to be reasonably possible and reasonably estimable, there can be no assurance that material losses will not be incurred from claims that the Company has not yet been notified of or are not yet determined to be probable, or reasonably possible and reasonable to estimate. The Company expenses legal costs as they are incurred.

Basis of Presentation and Sig18

Basis of Presentation and Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation: 10-Q SEC GAAP 10-Q 10-K
Significant accounting policies	Significant accounting policies:
Principles of consolidation	Principles of consolidation: VIE
Variable interest entities	Variable interest entities: SPE The SPEs’ debt arrangements are structured to provide enhancements to the lenders and investors, including in the form of overcollateralization (the principal balance of the collateral exceeds the balance of the debt) and reserve funds (restricted cash held by the SPEs). These enhancements, along with the isolated finance receivables pools, increase the creditworthiness of the SPEs above that of the Company as a whole. This increases the marketability of the Company’s collateral for borrowing purposes, leading to more favorable borrowing terms, improved interest rate risk management, and additional flexibility to grow the business. The SPEs are considered VIEs under GAAP and are consolidated into the financial statements of their primary beneficiary. The Company is considered to be the primary beneficiary of the SPEs because it has (i) power over the significant activities through its role as servicer of the finance receivables under each debt arrangement and (ii) the obligation to absorb losses or the right to receive returns that could be significant through the Company’s interest in the monthly residual cash flows of the SPEs after each debt is paid. Consolidation of VIEs results in these transactions being accounted for as secured borrowings; therefore, the pooled receivables and the related debts remain on the consolidated balance sheet of the Company. Each debt is secured solely by the assets of the VIEs and not by any other assets of the Company. The assets of the VIEs are the only source of funds for repayment on each debt, and restricted cash held by the VIEs can only be used to support payments on the debt. The Company recognizes revenue and provision for credit losses on the finance receivables of the VIEs and interest expense on the related secured debt.
Use of estimates	Use of estimates: Material estimates that are particularly susceptible to change relate to the determination of the allowance for credit losses, the fair value of share-based compensation, the valuation of deferred tax assets and liabilities, contingent liabilities on litigation matters, and the allocation of the purchase price to assets acquired in business combinations.
Reclassifications	Reclassifications:
Recent accounting pronouncements	Recent accounting pronouncements: FASB In February 2016, the FASB issued an accounting update to increase transparency and comparability of accounting for lease transactions. The update requires all leases to be recognized on the balance sheet as lease assets and lease liabilities and requires both quantitative and qualitative disclosures regarding key information about leasing arrangements. All of the Company’s leases are currently classified as operating leases, with no lease assets or lease liabilities recorded. The update is effective for annual and interim periods beginning after December 15, 2018, and early adoption is permitted. The implementation of the accounting update will create lease assets and lease liabilities and have an impact on the Company’s debt covenants. The Company is working with its lenders to address any issues before implementation and continues to evaluate and quantify the potential impacts of this update on its consolidated financial statements. In June 2016, the FASB issued an accounting update to change the impairment model for estimating credit losses on financial assets. The current incurred loss impairment model requires the recognition of credit losses when it is probable that a loss has been incurred. The incurred loss model will be replaced by an expected loss model, which requires entities to estimate the lifetime expected credit loss on such instruments and to record an allowance to offset the amortized cost basis of the financial asset. This update is effective for annual and interim periods beginning after December 15, 2019, and early adoption is permitted. The Company believes the implementation of the accounting update will have a material adverse effect on the Company’s consolidated financial statements and is in the process of quantifying the potential impacts. In August 2016, the FASB issued an accounting update to provide specific guidance on certain cash flow classification issues to reduce diversity in practice. These issues include debt prepayment or extinguishment costs, contingent consideration payments after business combinations, beneficial interest in securitization transactions, and proceeds from insurance claims. This update is effective for annual and interim periods beginning after December 15, 2017, and early adoption was permitted. The Company adopted the new standard effective in 2018, and implementation of the accounting update had no impact on the Company’s consolidated financial statements. In November 2016, the FASB issued an accounting update to address diversity in the classification of restricted cash transfers on the statement of cash flows. The amendment requires that the statements of cash flows explain the change during the period in the total of cash, cash equivalents, restricted cash, and restricted cash equivalents. This update is effective for annual and interim periods beginning after December 15, 2017, and early adoption was permitted. The Company adopted the new standard effective in 2018. As a result, the Company no longer reports the changes in restricted cash as an investing activity. Instead, restricted cash is included in the beginning and ending cash balances on the consolidated statements of cash flows.

Finance Receivables, Credit Q19

Finance Receivables, Credit Quality Information, and Allowance for Credit Losses (Tables)	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Summary of Finance Receivables	Finance receivables for the periods indicated consisted of the following: In thousands June 30, 2018 December 31, 2017 Small loans $ 384,690 $ 375,772 Large loans 392,101 347,218 Automobile loans 39,414 61,423 Retail loans 31,033 33,050 Finance receivables $ 847,238 $ 817,463
Contractual Delinquency of the Finance Receivable Portfolio by Component	The contractual delinquency of the finance receivable portfolio by product and aging for the periods indicated are as follows: June 30, 2018 Small Large Automobile Retail Total In thousands $ % $ % $ % $ % $ % Current $ 316,058 82.1 % $ 335,842 85.7 % $ 28,040 71.1 % $ 24,830 80.0 % $ 704,770 83.1 % 1 to 29 days past due 40,285 10.5 % 36,659 9.3 % 8,465 21.5 % 4,101 13.2 % 89,510 10.6 % Delinquent accounts 30 to 59 days 9,601 2.5 % 7,441 1.9 % 1,131 2.9 % 713 2.4 % 18,886 2.3 % 60 to 89 days 6,389 1.7 % 4,667 1.2 % 567 1.4 % 480 1.5 % 12,103 1.4 % 90 to 119 days 4,591 1.2 % 2,922 0.8 % 534 1.4 % 326 1.0 % 8,373 1.0 % 120 to 149 days 3,770 1.0 % 2,431 0.6 % 374 0.9 % 282 0.9 % 6,857 0.8 % 150 to 179 days 3,996 1.0 % 2,139 0.5 % 303 0.8 % 301 1.0 % 6,739 0.8 % Total delinquency $ 28,347 7.4 % $ 19,600 5.0 % $ 2,909 7.4 % $ 2,102 6.8 % $ 52,958 6.3 % Total finance receivables $ 384,690 100.0 % $ 392,101 100.0 % $ 39,414 100.0 % $ 31,033 100.0 % $ 847,238 100.0 % Finance receivables in nonaccrual status $ 14,835 3.9 % $ 9,612 2.5 % $ 1,841 4.7 % $ 1,002 3.2 % $ 27,290 3.2 % December 31, 2017 Small Large Automobile Retail Total In thousands $ % $ % $ % $ % $ % Current $ 301,114 80.1 % $ 299,467 86.3 % $ 43,140 70.2 % $ 25,730 77.8 % $ 669,451 81.9 % 1 to 29 days past due 39,412 10.5 % 29,211 8.4 % 13,387 21.8 % 4,523 13.7 % 86,533 10.6 % Delinquent accounts 30 to 59 days 9,738 2.6 % 5,949 1.6 % 2,162 3.6 % 879 2.7 % 18,728 2.2 % 60 to 89 days 8,755 2.3 % 4,757 1.4 % 1,046 1.7 % 739 2.2 % 15,297 1.9 % 90 to 119 days 6,881 1.9 % 3,286 1.0 % 701 1.1 % 471 1.5 % 11,339 1.4 % 120 to 149 days 5,284 1.4 % 2,537 0.7 % 636 1.0 % 408 1.2 % 8,865 1.1 % 150 to 179 days 4,588 1.2 % 2,011 0.6 % 351 0.6 % 300 0.9 % 7,250 0.9 % Total delinquency $ 35,246 9.4 % $ 18,540 5.3 % $ 4,896 8.0 % $ 2,797 8.5 % $ 61,479 7.5 % Total finance receivables $ 375,772 100.0 % $ 347,218 100.0 % $ 61,423 100.0 % $ 33,050 100.0 % $ 817,463 100.0 % Finance receivables in nonaccrual status $ 19,634 5.2 % $ 9,753 2.8 % $ 2,461 4.0 % $ 1,339 4.1 % $ 33,187 4.1 %
Summary of Changes in Allowance for Credit Losses	Changes in the allowance for credit losses for the periods indicated are as follows: Three Months Ended June 30, Six Months Ended June 30, In thousands 2018 2017 2018 2017 Balance at beginning of period $ 47,750 $ 41,000 $ 48,910 $ 41,250 Provision for credit losses 20,203 18,589 39,718 37,723 Credit losses (20,666 ) (19,003 ) (42,686 ) (39,997 ) Recoveries 1,163 1,414 2,508 3,024 Balance at end of period $ 48,450 $ 42,000 $ 48,450 $ 42,000
Reconciliation of Allowance for Credit Losses	The following is a reconciliation of the allowance for credit losses by product for the periods indicated: In thousands Balance 2018 Provision Credit Losses Recoveries Balance Finance Allowance as Small loans $ 23,366 $ 12,720 $ (12,782 ) $ 665 $ 23,969 $ 384,690 6.2 % Large loans 18,589 6,784 (6,002 ) 327 19,698 392,101 5.0 % Automobile loans 3,316 64 (873 ) 135 2,642 39,414 6.7 % Retail loans 2,479 635 (1,009 ) 36 2,141 31,033 6.9 % Total $ 47,750 $ 20,203 $ (20,666 ) $ 1,163 $ 48,450 $ 847,238 5.7 % In thousands Balance 2017 Provision Credit Losses Recoveries Balance 2017 Finance Allowance as Small loans $ 20,575 $ 11,082 $ (11,542 ) $ 795 $ 20,910 $ 348,742 6.0 % Large loans 12,675 6,124 (5,023 ) 224 14,000 267,921 5.2 % Automobile loans 5,775 825 (1,724 ) 334 5,210 79,861 6.5 % Retail loans 1,975 558 (714 ) 61 1,880 30,243 6.2 % Total $ 41,000 $ 18,589 $ (19,003 ) $ 1,414 $ 42,000 $ 726,767 5.8 % In thousands Balance Provision Credit Losses Recoveries Balance Finance Allowance as Small loans $ 24,749 $ 24,003 $ (26,156 ) $ 1,373 $ 23,969 $ 384,690 6.2 % Large loans 17,548 13,663 (12,198 ) 685 19,698 392,101 5.0 % Automobile loans 4,025 585 (2,340 ) 372 2,642 39,414 6.7 % Retail loans 2,588 1,467 (1,992 ) 78 2,141 31,033 6.9 % Total $ 48,910 $ 39,718 $ (42,686 ) $ 2,508 $ 48,450 $ 847,238 5.7 % In thousands Balance 2017 Provision Credit Losses Recoveries Balance 2017 Finance Allowance as Small loans $ 21,770 $ 22,245 $ (24,744 ) $ 1,639 $ 20,910 $ 348,742 6.0 % Large loans 11,460 11,727 (9,652 ) 465 14,000 267,921 5.2 % Automobile loans 5,910 2,563 (4,056 ) 793 5,210 79,861 6.5 % Retail loans 2,110 1,188 (1,545 ) 127 1,880 30,243 6.2 % Total $ 41,250 $ 37,723 $ (39,997 ) $ 3,024 $ 42,000 $ 726,767 5.8 %
Tabular Disclosure of Impaired Financing Receivables	The following is a summary of finance receivables evaluated for impairment for the periods indicated: June 30, 2018 In thousands Small Large Automobile Retail Total Impaired receivables specifically evaluated $ 6,291 $ 12,553 $ 1,422 $ 115 $ 20,381 Finance receivables evaluated collectively 378,399 379,548 37,992 30,918 826,857 Finance receivables outstanding $ 384,690 $ 392,101 $ 39,414 $ 31,033 $ 847,238 Impaired receivables in nonaccrual status $ 541 $ 973 $ 143 $ 29 $ 1,686 Amount of the specific reserve for impaired accounts $ 1,729 $ 3,101 $ 280 $ 22 $ 5,132 Amount of the general component of the allowance $ 22,240 $ 16,597 $ 2,362 $ 2,119 $ 43,318 December 31, 2017 In thousands Small Large Automobile Retail Total Impaired receivables specifically evaluated $ 5,094 $ 10,303 $ 1,724 $ 109 $ 17,230 Finance receivables evaluated collectively 370,678 336,915 59,699 32,941 800,233 Finance receivables outstanding $ 375,772 $ 347,218 $ 61,423 $ 33,050 $ 817,463 Impaired receivables in nonaccrual status $ 707 $ 931 $ 129 $ 31 $ 1,798 Amount of the specific reserve for impaired accounts $ 1,190 $ 2,183 $ 373 $ 20 $ 3,766 Amount of the general component of the allowance $ 23,559 $ 15,365 $ 3,652 $ 2,568 $ 45,144 The average recorded investment in impaired finance receivables and the amount of interest income recognized on impaired loans for the periods indicated are as follows: Three Months Ended June 30, 2018 2017 (1) In thousands Average Interest Income Average Small loans $ 6,272 $ 342 $ 3,810 Large loans 12,318 486 7,851 Automobile loans 1,512 17 2,201 Retail loans 105 2 111 Total $ 20,207 $ 847 $ 13,973 Six Months Ended June 30, 2018 2017 (1) In thousands Average Interest Income Average Small loans $ 5,868 $ 666 $ 3,351 Large loans 11,693 932 7,406 Automobile loans 1,589 65 2,286 Retail loans 101 9 106 Total $ 19,251 $ 1,672 $ 13,149 (1) It was not practical to compute the amount of interest income recognized on impaired loans prior to fiscal year 2018.

Interest Rate Caps (Tables)

Interest Rate Caps (Tables)	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Changes in Rate Caps	one-month Three Months Ended Six Months Ended In thousands 2018 2017 2018 2017 Balance at beginning of period $ 219 $ 27 $ 98 $ 62 Purchases 481 100 481 100 Fair value adjustment included in interest expense 18 (14 ) 139 (49 ) Balance at end of period, included in other assets $ 718 $ 113 $ 718 $ 113

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2018
Summary of the Company's Long-Term Debt	The following is a summary of the Company’s long-term debt as of the periods indicated: June 30, 2018 December 31, 2017 In thousands Long-Term Unamortized Net Long-Term Long-Term Unamortized Net Long-Term Senior revolving credit facility $ 383,180 $ (1,814 ) $ 381,366 $ 452,050 $ (2,162 ) $ 449,888 Amortizing loan 32,893 (344 ) 32,549 53,380 (547 ) 52,833 Revolving warehouse credit facility 29,692 (1,925 ) 27,767 66,066 (2,241 ) 63,825 RMIT 2018-1 securitization 150,000 (3,354 ) 146,646 — — — Total $ 595,765 $ (7,437 ) $ 588,328 $ 571,496 $ (4,950 ) $ 566,546 Unused amount of revolving credit facilities (subject to borrowing base) $ 375,128 $ 244,884
Variable Interest Entity, Primary Beneficiary [Member]
Schedule of Carrying Amounts of Consolidated VIE Assets and Liabilities	The carrying amounts of consolidated VIE assets and liabilities are as follows: In thousands June 30, 2018 December 31, 2017 Assets Cash $ 120 $ 70 Finance receivables 232,354 137,239 Allowance for credit losses (9,929 ) (7,129 ) Restricted cash 19,700 10,734 Other assets 110 119 Total assets $ 242,355 $ 141,033 Liabilities Net long-term debt $ 206,962 $ 116,658 Accounts payable and accrued expenses 44 53 Total liabilities $ 207,006 $ 116,711

Disclosure About Fair Value o22

Disclosure About Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Carrying Amount and Estimated Fair Values of Company's Financial Instruments	The carrying amount and estimated fair values of the Company’s financial instruments summarized by level are as follows: June 30, 2018 December 31, 2017 In thousands Carrying Estimated Carrying Estimated Assets Level 1 inputs Cash $ 2,799 $ 2,799 $ 5,230 $ 5,230 Restricted cash 26,356 26,356 16,787 16,787 Level 2 inputs Interest rate caps 718 718 98 98 Level 3 inputs Net finance receivables 798,788 798,788 768,553 768,553 Repossessed assets 208 208 431 431 Liabilities Level 3 inputs Long-term debt 595,765 595,765 571,496 571,496

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Reconciliation	Income tax expense differed from the amount computed by applying the federal income tax rate to total income before income taxes as a result of the following: Three Months Ended June 30, 2018 2017 In thousands $ % $ % Federal tax expense at statutory rate $ 2,327 21.0 % $ 3,460 35.0 % Increase (reduction) in income taxes resulting from: State tax, net of federal benefit 389 3.5 % 278 2.8 % Excess tax benefits from share-based awards (170 ) (1.5 )% (36 ) (0.4 )% Other 55 0.5 % 49 0.5 % $ 2,601 23.5 % $ 3,751 37.9 % Six Months Ended June 30, 2018 2017 In thousands $ % $ % Federal tax expense at statutory rate $ 4,709 21.0 % $ 6,967 35.0 % Increase (reduction) in income taxes resulting from: State tax, net of federal benefit 768 3.4 % 524 2.6 % Excess tax benefits from share-based awards (308 ) (1.4 )% (1,488 ) (7.5 )% Other 129 0.6 % 133 0.7 % $ 5,298 23.6 % $ 6,136 30.8 %

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following schedule reconciles the computation of basic and diluted earnings per share for the periods indicated: Three Months Ended Six Months Ended In thousands, except per share amounts 2018 2017 2018 2017 Numerator: Net income $ 8,482 $ 6,135 $ 17,126 $ 13,769 Denominator: Weighted average shares outstanding for basic earnings per share 11,658 11,554 11,638 11,524 Effect of dilutive securities 480 176 446 199 Weighted average shares adjusted for dilutive securities 12,138 11,730 12,084 11,723 Earnings per share: Basic $ 0.73 $ 0.53 $ 1.47 $ 1.19 Diluted $ 0.70 $ 0.52 $ 1.42 $ 1.17

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Option Grant Fair Value Assumptions	The fair value of option grants is estimated on the grant date using the Black-Scholes option-pricing model with the following weighted-average assumptions for option grants during the periods indicated below: Six Months Ended 2018 2017 Expected volatility 41.63 % 43.95 % Expected dividends 0.00 % 0.00 % Expected term (in years) 5.99 5.96 Risk-free rate 2.66 % 2.09 %
Summary of Company's Stock Option Plan Activity	The following table summarizes the stock option activity for the six months ended June 30, 2018: In thousands, except per share amounts Number of Weighted-Average Exercise Price Weighted-Average Aggregate Options outstanding at January 1, 2018 958 $ 17.39 Granted 112 28.25 Exercised (89 ) 16.62 Forfeited — — Expired — — Options outstanding at June 30, 2018 981 $ 18.69 7.1 $ 16,007 Options exercisable at June 30, 2018 703 $ 17.03 6.5 $ 12,639
Summary of Additional Stock Option Information	The following table provides additional stock option information for the periods indicated: Three Months Ended Six Months Ended In thousands, except per share amounts 2018 2017 2018 2017 Weighted-average grant date fair value per share $ — $ 8.72 $ 12.39 $ 8.90 Intrinsic value of options exercised $ 574 $ 78 $ 1,604 $ 4,802 Fair value of stock options that vested $ — $ 258 $ 199 $ 559
Summary of RSU Activity	The following table summarizes RSU activity during the six months ended June 30, 2018: In thousands, except per unit amounts Units Weighted-Average Fair Value Per Unit Non-vested 201 $ 17.33 Granted 59 28.25 Vested — — Forfeited (78 ) 14.92 Non-vested 182 $ 21.89
Summary of Additional RSU Information	The following table provides additional RSU information for the periods indicated: Three Months Ended Six Months Ended 2018 2017 2018 2017 Weighted-average grant date fair value per unit $ — $ — $ 28.25 $ 19.99
Summary of CSPU Activity	The following table summarizes CSPU activity during the six months ended June 30, 2018: In thousands, except per unit amounts Units Weighted-Average Fair Value Per Unit Non-vested 3,484 $ 1.00 Granted 1,660 1.00 Vested — — Forfeited (1,162 ) 1.00 Non-vested 3,982 $ 1.00
Summary of Restricted Stock Activity	The following table summarizes restricted stock activity during the six months ended June 30, 2018: In thousands, except per share amounts Shares Weighted-Average Fair Value Per Share Non-vested 53 $ 19.36 Granted 98 24.70 Vested (34 ) 21.09 Forfeited — — Non-vested 117 $ 23.33
Summary of Additional Restricted Stock Information	The following table provides additional restricted stock information: Three Months Ended Six Months Ended In thousands, except per share amounts 2018 2017 2018 2017 Weighted-average grant date fair value per share $ 34.39 $ 20.88 $ 24.70 $ 18.38 Fair value of restricted stock awards that vested $ 651 $ 345 $ 711 $ 390

Nature of Business - Additional

Nature of Business - Additional Information (Detail)	Jun. 30, 2018LocationBranch
Entity Location [Line Items]
Number of branches	340
Net number of branches consolidated | Branch	2
Alabama [Member]
Entity Location [Line Items]
Number of branches	46
Georgia [Member]
Entity Location [Line Items]
Number of branches	8
New Mexico [Member]
Entity Location [Line Items]
Number of branches	18
North Carolina [Member]
Entity Location [Line Items]
Number of branches	36
Oklahoma [Member]
Entity Location [Line Items]
Number of branches	28
South Carolina [Member]
Entity Location [Line Items]
Number of branches	67
Tennessee [Member]
Entity Location [Line Items]
Number of branches	22
Texas [Member]
Entity Location [Line Items]
Number of branches	98
Virginia [Member]
Entity Location [Line Items]
Number of branches	17

Finance Receivables, Credit Q27

Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Summary of Finance Receivables (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	$ 847,238	$ 817,463	$ 726,767
Small Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	384,690	375,772	348,742
Large Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	392,101	347,218	267,921
Automobile Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	39,414	61,423	79,861
Retail Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	$ 31,033	$ 33,050	$ 30,243

Finance Receivables, Credit Q28

Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Contractual Delinquency of the Finance Receivable Portfolio by Component (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 52,958	$ 61,479
Past due, Percent	6.30%	7.50%
Finance receivables	$ 847,238	$ 817,463	$ 726,767
Total finance receivables, Percent	100.00%	100.00%
Finance receivables in nonaccrual status	$ 27,290	$ 33,187
Finance receivables in nonaccrual status, Percent	3.20%	4.10%
Financing Receivables, Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	$ 704,770	$ 669,451
Current, Percent	83.10%	81.90%
1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 89,510	$ 86,533
Past due, Percent	10.60%	10.60%
Delinquent Accounts 30 to 59 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 18,886	$ 18,728
Past due, Percent	2.30%	2.20%
Delinquent Accounts 60 to 89 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 12,103	$ 15,297
Past due, Percent	1.40%	1.90%
Delinquent Accounts 90 to 119 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 8,373	$ 11,339
Past due, Percent	1.00%	1.40%
Delinquent Accounts 120 to 149 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 6,857	$ 8,865
Past due, Percent	0.80%	1.10%
Delinquent Accounts 150 to 179 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 6,739	$ 7,250
Past due, Percent	0.80%	0.90%
Small Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 28,347	$ 35,246
Past due, Percent	7.40%	9.40%
Finance receivables	$ 384,690	$ 375,772	348,742
Total finance receivables, Percent	100.00%	100.00%
Finance receivables in nonaccrual status	$ 14,835	$ 19,634
Finance receivables in nonaccrual status, Percent	3.90%	5.20%
Small Loans [Member] | Financing Receivables, Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	$ 316,058	$ 301,114
Current, Percent	82.10%	80.10%
Small Loans [Member] | 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 40,285	$ 39,412
Past due, Percent	10.50%	10.50%
Small Loans [Member] | Delinquent Accounts 30 to 59 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 9,601	$ 9,738
Past due, Percent	2.50%	2.60%
Small Loans [Member] | Delinquent Accounts 60 to 89 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 6,389	$ 8,755
Past due, Percent	1.70%	2.30%
Small Loans [Member] | Delinquent Accounts 90 to 119 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 4,591	$ 6,881
Past due, Percent	1.20%	1.90%
Small Loans [Member] | Delinquent Accounts 120 to 149 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 3,770	$ 5,284
Past due, Percent	1.00%	1.40%
Small Loans [Member] | Delinquent Accounts 150 to 179 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 3,996	$ 4,588
Past due, Percent	1.00%	1.20%
Large Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 19,600	$ 18,540
Past due, Percent	5.00%	5.30%
Finance receivables	$ 392,101	$ 347,218	267,921
Total finance receivables, Percent	100.00%	100.00%
Finance receivables in nonaccrual status	$ 9,612	$ 9,753
Finance receivables in nonaccrual status, Percent	2.50%	2.80%
Large Loans [Member] | Financing Receivables, Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	$ 335,842	$ 299,467
Current, Percent	85.70%	86.30%
Large Loans [Member] | 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 36,659	$ 29,211
Past due, Percent	9.30%	8.40%
Large Loans [Member] | Delinquent Accounts 30 to 59 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 7,441	$ 5,949
Past due, Percent	1.90%	1.60%
Large Loans [Member] | Delinquent Accounts 60 to 89 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 4,667	$ 4,757
Past due, Percent	1.20%	1.40%
Large Loans [Member] | Delinquent Accounts 90 to 119 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 2,922	$ 3,286
Past due, Percent	0.80%	1.00%
Large Loans [Member] | Delinquent Accounts 120 to 149 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 2,431	$ 2,537
Past due, Percent	0.60%	0.70%
Large Loans [Member] | Delinquent Accounts 150 to 179 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 2,139	$ 2,011
Past due, Percent	0.50%	0.60%
Automobile Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 2,909	$ 4,896
Past due, Percent	7.40%	8.00%
Finance receivables	$ 39,414	$ 61,423	79,861
Total finance receivables, Percent	100.00%	100.00%
Finance receivables in nonaccrual status	$ 1,841	$ 2,461
Finance receivables in nonaccrual status, Percent	4.70%	4.00%
Automobile Loans [Member] | Financing Receivables, Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	$ 28,040	$ 43,140
Current, Percent	71.10%	70.20%
Automobile Loans [Member] | 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 8,465	$ 13,387
Past due, Percent	21.50%	21.80%
Automobile Loans [Member] | Delinquent Accounts 30 to 59 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 1,131	$ 2,162
Past due, Percent	2.90%	3.60%
Automobile Loans [Member] | Delinquent Accounts 60 to 89 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 567	$ 1,046
Past due, Percent	1.40%	1.70%
Automobile Loans [Member] | Delinquent Accounts 90 to 119 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 534	$ 701
Past due, Percent	1.40%	1.10%
Automobile Loans [Member] | Delinquent Accounts 120 to 149 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 374	$ 636
Past due, Percent	0.90%	1.00%
Automobile Loans [Member] | Delinquent Accounts 150 to 179 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 303	$ 351
Past due, Percent	0.80%	0.60%
Retail Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 2,102	$ 2,797
Past due, Percent	6.80%	8.50%
Finance receivables	$ 31,033	$ 33,050	$ 30,243
Total finance receivables, Percent	100.00%	100.00%
Finance receivables in nonaccrual status	$ 1,002	$ 1,339
Finance receivables in nonaccrual status, Percent	3.20%	4.10%
Retail Loans [Member] | Financing Receivables, Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	$ 24,830	$ 25,730
Current, Percent	80.00%	77.80%
Retail Loans [Member] | 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 4,101	$ 4,523
Past due, Percent	13.20%	13.70%
Retail Loans [Member] | Delinquent Accounts 30 to 59 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 713	$ 879
Past due, Percent	2.40%	2.70%
Retail Loans [Member] | Delinquent Accounts 60 to 89 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 480	$ 739
Past due, Percent	1.50%	2.20%
Retail Loans [Member] | Delinquent Accounts 90 to 119 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 326	$ 471
Past due, Percent	1.00%	1.50%
Retail Loans [Member] | Delinquent Accounts 120 to 149 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 282	$ 408
Past due, Percent	0.90%	1.20%
Retail Loans [Member] | Delinquent Accounts 150 to 179 Days [Member]
Financing Receivable, Recorded Investment [Line Items]
Past due	$ 301	$ 300
Past due, Percent	1.00%	0.90%

Finance Receivables, Credit Q29

Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Receivables [Abstract]
Balance at beginning of period	$ 47,750	$ 41,000	$ 48,910	$ 41,250
Provision for credit losses	20,203	18,589	39,718	37,723
Credit losses	(20,666)	(19,003)	(42,686)	(39,997)
Recoveries	1,163	1,414	2,508	3,024
Balance at end of period	$ 48,450	$ 42,000	$ 48,450	$ 42,000

Finance Receivables, Credit Q30

Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Increase (decrease) in provision for credit losses		$ 20,203	$ 18,589	$ 39,718	$ 37,723
Impaired finance receivables as a percentage of total finance receivables				2.40%		2.10%
Hurricanes [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Increase (decrease) in provision for credit losses	$ 3,000

Finance Receivables, Credit Q31

Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Reconciliation of Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 47,750	$ 41,000	$ 48,910	$ 41,250
Provision	20,203	18,589	39,718	37,723
Credit losses	(20,666)	(19,003)	(42,686)	(39,997)
Recoveries	1,163	1,414	2,508	3,024
Balance at end of period	48,450	42,000	48,450	42,000
Finance receivables	$ 847,238	$ 726,767	$ 847,238	$ 726,767	$ 817,463
Allowance as Percentage of Finance Receivables	5.70%	5.80%	5.70%	5.80%
Small Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 23,366	$ 20,575	$ 24,749	$ 21,770
Provision	12,720	11,082	24,003	22,245
Credit losses	(12,782)	(11,542)	(26,156)	(24,744)
Recoveries	665	795	1,373	1,639
Balance at end of period	23,969	20,910	23,969	20,910
Finance receivables	$ 384,690	$ 348,742	$ 384,690	$ 348,742	375,772
Allowance as Percentage of Finance Receivables	6.20%	6.00%	6.20%	6.00%
Large Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 18,589	$ 12,675	$ 17,548	$ 11,460
Provision	6,784	6,124	13,663	11,727
Credit losses	(6,002)	(5,023)	(12,198)	(9,652)
Recoveries	327	224	685	465
Balance at end of period	19,698	14,000	19,698	14,000
Finance receivables	$ 392,101	$ 267,921	$ 392,101	$ 267,921	347,218
Allowance as Percentage of Finance Receivables	5.00%	5.20%	5.00%	5.20%
Automobile Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 3,316	$ 5,775	$ 4,025	$ 5,910
Provision	64	825	585	2,563
Credit losses	(873)	(1,724)	(2,340)	(4,056)
Recoveries	135	334	372	793
Balance at end of period	2,642	5,210	2,642	5,210
Finance receivables	$ 39,414	$ 79,861	$ 39,414	$ 79,861	61,423
Allowance as Percentage of Finance Receivables	6.70%	6.50%	6.70%	6.50%
Retail Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 2,479	$ 1,975	$ 2,588	$ 2,110
Provision	635	558	1,467	1,188
Credit losses	(1,009)	(714)	(1,992)	(1,545)
Recoveries	36	61	78	127
Balance at end of period	2,141	1,880	2,141	1,880
Finance receivables	$ 31,033	$ 30,243	$ 31,033	$ 30,243	$ 33,050
Allowance as Percentage of Finance Receivables	6.90%	6.20%	6.90%	6.20%

Finance Receivables, Credit Q32

Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Tabular Disclosure of Impaired Financing Receivables (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired receivables specifically evaluated	$ 20,381	$ 17,230
Finance receivables evaluated collectively	826,857	800,233
Finance receivables	847,238	817,463	$ 726,767
Impaired receivables in nonaccrual status	1,686	1,798
Amount of the specific reserve for impaired accounts	5,132	3,766
Amount of the general component of the allowance	43,318	45,144
Small Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired receivables specifically evaluated	6,291	5,094
Finance receivables evaluated collectively	378,399	370,678
Finance receivables	384,690	375,772	348,742
Impaired receivables in nonaccrual status	541	707
Amount of the specific reserve for impaired accounts	1,729	1,190
Amount of the general component of the allowance	22,240	23,559
Large Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired receivables specifically evaluated	12,553	10,303
Finance receivables evaluated collectively	379,548	336,915
Finance receivables	392,101	347,218	267,921
Impaired receivables in nonaccrual status	973	931
Amount of the specific reserve for impaired accounts	3,101	2,183
Amount of the general component of the allowance	16,597	15,365
Automobile Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired receivables specifically evaluated	1,422	1,724
Finance receivables evaluated collectively	37,992	59,699
Finance receivables	39,414	61,423	79,861
Impaired receivables in nonaccrual status	143	129
Amount of the specific reserve for impaired accounts	280	373
Amount of the general component of the allowance	2,362	3,652
Retail Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired receivables specifically evaluated	115	109
Finance receivables evaluated collectively	30,918	32,941
Finance receivables	31,033	33,050	$ 30,243
Impaired receivables in nonaccrual status	29	31
Amount of the specific reserve for impaired accounts	22	20
Amount of the general component of the allowance	$ 2,119	$ 2,568

Finance Receivables, Credit Q33

Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Schedule of Average Recorded Investment in Impaired Finance Receivables (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 20,207	$ 13,973	$ 19,251	$ 13,149
Interest Income Recognized	847		1,672
Small Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	6,272	3,810	5,868	3,351
Interest Income Recognized	342		666
Large Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	12,318	7,851	11,693	7,406
Interest Income Recognized	486		932
Automobile Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	1,512	2,201	1,589	2,286
Interest Income Recognized	17		65
Retail Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	105	$ 111	101	$ 106
Interest Income Recognized	$ 2		$ 9

Interest Rate Caps -Additional

Interest Rate Caps -Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Notional amount of interest rate cap	$ 400,000,000
London Interbank Offered Rate (LIBOR) [Member]
Derivative [Line Items]
Interest rate	2.09%	1.56%
Interest Rate Cap Contracts Expiring in March 2019 [Member]
Derivative [Line Items]
Notional amount of interest rate cap	$ 50,000,000
Maturity period of interest rate caps exchanged	Mar. 31, 2019
Strike rate	2.50%
Interest Rate Cap Contracts Expiring In April 2020 [Member]
Derivative [Line Items]
Notional amount of interest rate cap	$ 100,000,000
Maturity period of interest rate caps exchanged	Apr. 30, 2020
Strike rate	3.25%
Interest Rate Cap Contracts Expiring In June 2020 [Member]
Derivative [Line Items]
Notional amount of interest rate cap	$ 50,000,000
Maturity period of interest rate caps exchanged	Jun. 30, 2020
Strike rate	2.50%
Interest Rate Cap Contracts Expiring In April 2021 [Member]
Derivative [Line Items]
Notional amount of interest rate cap	$ 200,000,000
Maturity period of interest rate caps exchanged	Apr. 30, 2021
Strike rate	3.50%

Interest Rate Caps - Summary of

Interest Rate Caps - Summary of Change in Rate Caps (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Offsetting [Abstract]
Balance at beginning of period	$ 219	$ 27	$ 98	$ 62
Purchases	481	100	481	100
Fair value adjustment included in interest expense	18	(14)	139	(49)
Balance at end of period, included in other assets	$ 718	$ 113	$ 718	$ 113

Long-Term Debt - Summary of the

Long-Term Debt - Summary of the Company's Long-Term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 595,765	$ 571,496
Unamortized debt issuance costs	(7,437)	(4,950)
Net long-term debt	588,328	566,546
Unused amount of revolving credit facilities (subject to borrowing base)	375,128	244,884
Senior Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt	383,180	452,050
Unamortized debt issuance costs	(1,814)	(2,162)
Net long-term debt	381,366	449,888
Amortizing Loan [Member]
Debt Instrument [Line Items]
Long-term debt	32,893	53,380
Unamortized debt issuance costs	(344)	(547)
Net long-term debt	32,549	52,833
Revolving Warehouse Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt	29,692	66,066
Unamortized debt issuance costs	(1,925)	(2,241)
Net long-term debt	27,767	$ 63,825
RMIT 2018-1 securitization [Member]
Debt Instrument [Line Items]
Long-term debt	150,000
Unamortized debt issuance costs	(3,354)
Net long-term debt	$ 146,646

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	Feb. 05, 2018	Oct. 02, 2017	Feb. 28, 2018	Nov. 30, 2017	Jun. 30, 2017	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Cash deposited to restricted cash reserve account					$ 10,630,000	$ 26,356,000	$ 16,787,000	$ 8,297,000
Private offering of investment grade asset-backed notes						150,000,000
Amortizing Loan [Member]
Line of Credit Facility [Line Items]
Percentage of advances on debt agreement eligible secured finance receivables			85.00%
Cash deposited to restricted cash reserve account						$ 1,300,000
Amortizing loan, amount									$ 75,700,000
Additional loan advance				$ 37,800,000
Credit agreement, Interest rate			3.25%
Debt maturity date				2024-12
Terms related to loan prepayment						The credit agreement allows the Company to prepay the loan when the outstanding balance falls below 20% of the original loan amount.
Principal balance percentage threshold for allowable prepayment of loan						20.00%
Amortizing Loan Prior to February 2018 [Member]
Line of Credit Facility [Line Items]
Percentage of advances on debt agreement eligible secured finance receivables				88.00%
Credit agreement, Interest rate				3.00%
Revolving Warehouse Credit Facility [Member]
Line of Credit Facility [Line Items]
Secured line of credit						$ 150,000,000
Percentage of advances on debt agreement eligible secured finance receivables						80.00%
Description of Variable Rate Basis						Borrowings under the facility bore interest, payable monthly, at a blended rate equal to three-month LIBOR, plus a margin of 3.50%. In October 2017 and February 2018, the margin decreased to 3.25% and 3.00%, respectively, following the satisfaction of milestones associated with the Company's conversion to a new loan origination and servicing system. The three-month LIBOR was 2.34% and 1.69% at June 30, 2018 and December 31, 2017, respectively.
Cash deposited to restricted cash reserve account						$ 400,000
Debt maturity date						2019-12
Debt revolving period end date						2018-12
Revolving Warehouse Credit Facility Prior to May 2018 [Member]
Line of Credit Facility [Line Items]
Secured line of credit						$ 125,000,000
RMIT 2018-1 securitization [Member]
Line of Credit Facility [Line Items]
Cash deposited to restricted cash reserve account						$ 1,700,000
Debt maturity date						2027-07
Terms related to loan prepayment						Prior to maturity in July 2027, the Company may redeem the notes in full, but not in part, at its option on any note payment date on or after the payment date occurring in July 2020. No payments of principal of the notes will be made during the revolving period.
Debt revolving period end date						2020-06
Private offering of investment grade asset-backed notes						$ 150,000,000
Weighted average rate						3.93%
Senior Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Secured line of credit					$ 638,000,000
Debt agreement expiration date					Jun. 20, 2020
Line of credit facility, accordion feature					$ 700,000,000
Unused line fee per annum						0.50%
Decreased unused line fee						0.375%
Percentage of advances on debt agreement eligible secured finance receivables						85.00%
Percentage of advances on debt agreement eligible unsecured finance receivables						70.00%
Current percentage of advances on eligible secured finance receivables						82.00%
Current percentage of advances on eligible unsecured finance receivables						67.00%
Credit facility, eligible borrowing capacity						$ 67,100,000
Description of Variable Rate Basis						Borrowings under the facility bear interest, payable monthly, at rates equal to LIBOR of a maturity the Company elects between one and six months, with a LIBOR floor of 1.00%, plus a 3.00% margin, increasing to 3.25% when the availability percentage is below 10%. The one-month LIBOR rate was 2.09% and 1.56% at June 30, 2018 and December 31, 2017, respectively. Alternatively, the Company may pay interest at the prime rate, plus a 2.00% margin, increasing to 2.25% when the availability percentage is below 10%. The prime rate was 5.00% and 4.50% at June 30, 2018 and December 31, 2017, respectively.
Senior Revolving Credit Facility [Member] | Senior Revolving Credit Facility Prior to June 20, 2017 [Member]
Line of Credit Facility [Line Items]
Secured line of credit					$ 585,000,000
Debt agreement expiration date					Aug. 31, 2019
Waterfall [Member]
Line of Credit Facility [Line Items]
Cash deposited to restricted cash reserve account						$ 16,400,000	$ 8,600,000
Minimum [Member] | Revolving Warehouse Credit Facility [Member]
Line of Credit Facility [Line Items]
Unused line fee per annum						0.35%
Minimum [Member] | Senior Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Average outstanding amount						$ 413,000,000
Maximum [Member] | Revolving Warehouse Credit Facility [Member]
Line of Credit Facility [Line Items]
Unused line fee per annum						0.85%
London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Interest rate						2.09%	1.56%
London Interbank Offered Rate (LIBOR) [Member] | Revolving Warehouse Credit Facility [Member]
Line of Credit Facility [Line Items]
Interest rate, basis spread						3.50%
Interest rate						2.34%	1.69%
London Interbank Offered Rate (LIBOR) [Member] | Milestones Associated with Conversion to New Loan Origination and Servicing System [Member] | Revolving Warehouse Credit Facility [Member]
Line of Credit Facility [Line Items]
Interest rate, basis spread	3.00%	3.25%
London Interbank Offered Rate (LIBOR) [Member] | Senior Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Interest rate, basis spread						3.00%
Interest rate						2.09%	1.56%
London Interbank Offered Rate (LIBOR) [Member] | Senior Revolving Credit Facility [Member] | Availability Percentage Below 10% [Member]
Line of Credit Facility [Line Items]
Interest rate, basis spread						3.25%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Senior Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Effective interest rate on line of credit						1.00%
Prime Rate [Member] | Senior Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Interest rate, basis spread						2.00%
Interest rate						5.00%	4.50%
Prime Rate [Member] | Senior Revolving Credit Facility [Member] | Availability Percentage Below 10% [Member]
Line of Credit Facility [Line Items]
Interest rate, basis spread						2.25%

Long-Term Debt - Schedule of Ca

Long-Term Debt - Schedule of Carrying Amounts of Consolidated VIE's Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Assets
Cash	$ 2,799		$ 5,230	$ 3,678		$ 4,446
Finance receivables	847,238		817,463	726,767
Allowance for credit losses	(48,450)	$ (47,750)	(48,910)	(42,000)	$ (41,000)	(41,250)
Restricted cash	26,356		16,787	$ 10,630		$ 8,297
Other assets	17,420		16,012
Total assets	868,220		829,483
Liabilities
Net long-term debt	588,328		566,546
Accounts payable and accrued expenses	17,526		18,565
Total liabilities	609,686		590,072
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Cash	120		70
Finance receivables	232,354		137,239
Allowance for credit losses	(9,929)		(7,129)
Restricted cash	19,700		10,734
Other assets	110		119
Total assets	242,355		141,033
Liabilities
Net long-term debt	206,962		116,658
Accounts payable and accrued expenses	44		53
Total liabilities	$ 207,006		$ 116,711

Disclosure About Fair Value o39

Disclosure About Fair Value of Financial Instruments - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Turnover rate of loan portfolio	1.3

Disclosure About Fair Value o40

Disclosure About Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Values of Company's Financial Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Assets
Interest rate caps	$ 718	$ 219	$ 98	$ 113	$ 27	$ 62
Net finance receivables	798,788		768,553
Carrying Amount [Member] | Level 1 Inputs [Member]
Assets
Cash	2,799		5,230
Restricted cash	26,356		16,787
Carrying Amount [Member] | Level 2 Inputs [Member]
Assets
Interest rate caps	718		98
Carrying Amount [Member] | Level 3 Inputs [Member]
Assets
Net finance receivables	798,788		768,553
Repossessed assets	208		431
Liabilities
Long-term debt	595,765		571,496
Estimated Fair Value [Member] | Level 1 Inputs [Member]
Assets
Cash	2,799		5,230
Restricted cash	26,356		16,787
Estimated Fair Value [Member] | Level 2 Inputs [Member]
Assets
Interest rate caps	718		98
Estimated Fair Value [Member] | Level 3 Inputs [Member]
Assets
Net finance receivables	798,788		768,553
Repossessed assets	208		431
Liabilities
Long-term debt	$ 595,765		$ 571,496

Income Taxes - Schedule of Effe

Income Taxes - Schedule of Effective Income Tax Reconciliation (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal tax expense at statutory rate	21.00%	35.00%	21.00%	35.00%	35.00%
Increase (reduction) in income taxes resulting from:
State tax, net of federal benefit	3.50%	2.80%	3.40%	2.60%
Excess tax benefits from share-based awards	(1.50%)	(0.40%)	(1.40%)	(7.50%)
Other	0.50%	0.50%	0.60%	0.70%
Effective tax rate	23.50%	37.90%	23.60%	30.80%
Federal tax expense at statutory rate	$ 2,327	$ 3,460	$ 4,709	$ 6,967
Increase (reduction) in income taxes resulting from:
State tax, net of federal benefit	389	278	768	524
Excess tax benefits from share-based awards	(170)	(36)	(308)	(1,488)
Other	55	49	129	133
Total	$ 2,601	$ 3,751	$ 5,298	$ 6,136

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal corporate tax rate	21.00%	35.00%	21.00%	35.00%	35.00%
Income tax rate			(14.00%)
Increase (decrease) in effective tax rate			(7.20%)

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Numerator:
Net income	$ 8,482	$ 6,135	$ 17,126	$ 13,769	$ 29,963
Denominator:
Weighted average shares outstanding for basic earnings per share	11,658	11,554	11,638	11,524
Effect of dilutive securities	480	176	446	199
Weighted average shares adjusted for dilutive securities	12,138	11,730	12,084	11,723
Basic	$ 0.73	$ 0.53	$ 1.47	$ 1.19
Diluted	$ 0.70	$ 0.52	$ 1.42	$ 1.17

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Stock Compensation Plans [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options to purchase common stock, Shares	138	249	138	249

Share-based Compensation - Addi

Share-based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2016	Apr. 22, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period of options			10 years
2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant	1,100,000		1,100,000
Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target for achievement period			3 years
Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-employee director compensation grant period			5 days
Minimum [Member] | Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance target for achievement			0.00%
Maximum [Member] | Graded and Cliff Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of options			5 years
Maximum [Member] | Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance target for achievement			150.00%
Stock Compensation Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense	$ 10.3		$ 10.3
Period of recognition of share-based compensation expense	2 years
Share-based compensation expense	$ 1.8	$ 1.3	$ 3.4	$ 2.1
Stock Compensation Plans [Member] | 2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum aggregate number of shares	1,600,000		1,600,000
Shares available for grant						922,000
Plan description			As of June 30, 2018, subject to adjustments as provided in the 2015 Plan, the maximum aggregate number of shares of the Company’s common stock that could be issued under the 2015 Plan could not exceed the sum of (i) 1.6 million shares plus (ii) any shares (A) remaining available for the grant of awards as of the 2015 Plan effective date (April 22, 2015) under the 2007 Plan or the 2011 Plan, and/or (B) subject to an award granted under the 2007 Plan or the 2011 Plan, which award is forfeited, cancelled, terminated, expires, or lapses without the issuance of shares or pursuant to which such shares are forfeited. As of the effectiveness of the 2015 Plan (April 22, 2015), there were 922 thousand shares available for grant under the 2015 Plan, inclusive of shares previously available for grant under the 2007 Plan and the 2011 Plan that were rolled over to the 2015 Plan.
Restricted Stock [Member] | Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target for achievement period			1 year
Deferred compensation arrangement with individual, description			Each participant in the program is eligible to earn a restricted stock award, subject to performance over a one-year period. Payout under the program can range from 0% to 150% of target based on the achievement of five Company performance metrics and individual performance goals (subject to continued employment and certain other terms and conditions of the program).
Vesting period of options			2 years
Restricted Stock [Member] | Minimum [Member] | Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance target for achievement					0.00%
Restricted Stock [Member] | Maximum [Member] | Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance target for achievement					150.00%

Share-based Compensation - Opti

Share-based Compensation - Option Grant Fair Value Assumptions (Detail)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected volatility	41.63%	43.95%
Expected dividends	0.00%	0.00%
Expected term (in years)	5 years 11 months 26 days	5 years 11 months 15 days
Risk-free rate	2.66%	2.09%

Share-based Compensation - Summ

Share-based Compensation - Summary of Company's Stock Option Plan Activity (Detail) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)$ / sharesshares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Shares, Options outstanding, Beginning balance | shares	958
Number of Shares, Granted | shares	112
Number of Shares, Exercised | shares	(89)
Number of Shares, Forfeited | shares	0
Number of Shares, Expired | shares	0
Number of Shares, Options outstanding, Ending balance | shares	981
Number of Shares, Options exercisable | shares	703
Weighted Average Exercise Price Per Share, Options outstanding, Beginning balance | $ / shares	$ 17.39
Weighted Average Exercise Price Per Share, Granted | $ / shares	28.25
Weighted Average Exercise Price Per Share, Exercised | $ / shares	16.62
Weighted Average Exercise Price Per Share, Forfeited | $ / shares	0
Weighted Average Exercise Price Per Share, Expired | $ / shares	0
Weighted Average Exercise Price Per Share, Options outstanding, Ending balance | $ / shares	18.69
Weighted Average Exercise Price Per Share, Options exercisable | $ / shares	$ 17.03
Weighted Average Remaining Contractual Life (Years), Options outstanding	7 years 1 month 6 days
Weighted Average Remaining Contractual Life (Years), Options exercisable	6 years 6 months
Aggregate Intrinsic Value, Options outstanding | $	$ 16,007
Aggregate Intrinsic Value, Options exercisable | $	$ 12,639

Share-based Compensation - Su48

Share-based Compensation - Summary of Additional Stock Option Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted-average grant date fair value per share		$ 8.72	$ 12.39	$ 8.90
Intrinsic value of options exercised	$ 574	$ 78	$ 1,604	$ 4,802
Fair value of stock options that vested		$ 258	$ 199	$ 559

Share-based Compensation - Su49

Share-based Compensation - Summary of RSU Activity (Detail) - Restricted Stock Units (RSUs) [Member] - $ / shares shares in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested, January 1, 2018	201
Granted	59
Vested	0
Forfeited	(78)
Non-vested, at June 30, 2018	182
Weighted Average Grant Date Fair Value, Non-vested, January 1, 2018	$ 17.33
Weighted Average Grant Date Fair Value, Granted	28.25	$ 19.99
Weighted Average Grant Date Fair Value, Vested	0
Weighted Average Grant Date Fair Value, Forfeited	14.92
Weighted Average Grant Date Fair Value, Non-vested, at June 30, 2018	$ 21.89

Share-based Compensation - Su50

Share-based Compensation - Summary of Additional RSU Information (Detail) - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value per unit	$ 28.25	$ 19.99

Share-based Compensation - Su51

Share-based Compensation - Summary of CSPU Activity (Detail) - Performance Units [Member] shares in Thousands	6 Months Ended
	Jun. 30, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested, January 1, 2018 | shares	3,484
Granted | shares	1,660
Vested | shares	0
Forfeited | shares	(1,162)
Non-vested, at June 30, 2018 | shares	3,982
Weighted Average Grant Date Fair Value, Non-vested, January 1, 2018 | $ / shares	$ 1
Weighted Average Grant Date Fair Value, Granted | $ / shares	1
Weighted Average Grant Date Fair Value, Vested | $ / shares	0
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	1
Weighted Average Grant Date Fair Value, Non-vested, at June 30, 2018 | $ / shares	$ 1

Share-based Compensation - Su52

Share-based Compensation - Summary of Restricted Stock Activity (Detail) - Restricted Stock [Member] - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested, January 1, 2018			53
Granted			98
Vested			(34)
Forfeited			0
Non-vested, at June 30, 2018	117		117
Weighted Average Grant Date Fair Value, Non-vested, January 1, 2018			$ 19.36
Weighted Average Grant Date Fair Value, Granted	$ 34.39	$ 20.88	24.70	$ 18.38
Weighted Average Grant Date Fair Value, Vested			21.09
Weighted Average Grant Date Fair Value, Forfeited			0
Weighted Average Grant Date Fair Value, Non-vested, at June 30, 2018	$ 23.33		$ 23.33

Share-based Compensation - Su53

Share-based Compensation - Summary of Additional Restricted Stock Information (Detail) - Restricted Stock [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value per share	$ 34.39	$ 20.88	$ 24.70	$ 18.38
Fair value of restricted stock awards that vested	$ 651	$ 345	$ 711	$ 390

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) $ in Millions	Jun. 30, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
Loss contingency accrual	$ 0.2