CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	[1]	Non-Controlling Interest [Member]	Total
Balances at Dec. 31, 2013	$ 2	$ 184,263	$ (2,356)	$ 232,091		$ 594	$ 414,594
Balances, Shares at Dec. 31, 2013	22,240,000
Net income				59,887		111	59,998	[1]
Foreign currency translation adjustment			(3,321)				(3,321)	[1]
Repurchase of common stock		(31,395)					(31,395)
Repurchase of common stock, Shares	(1,483,000)
Exercise of stock options		114					114
Exercise of stock options, Shares	7,000
Stock based compensation - options		1,627					1,627
Stock-based compensation - restricted stock		258					258
Stock-based compensation - restricted stock, Shares	24,000
Excess tax benefit from share-based compensation awards		27					27
Contributions and other						84	84
Balances at Dec. 31, 2014	$ 2	154,894	(5,677)	291,978		789	441,986
Balances, Shares at Dec. 31, 2014	20,788,000
Net income				26,601		134	26,735	[1]
Foreign currency translation adjustment			(2,245)				(2,245)	[1]
Repurchase of common stock		(12,997)					(12,997)
Repurchase of common stock, Shares	(1,089,000)
Exercise of stock options		4,744					4,744
Exercise of stock options, Shares	415,000
Stock based compensation - options		1,542					1,542
Stock-based compensation - restricted stock		373					373
Stock-based compensation - restricted stock, Shares	21,000
Excess tax benefit from share-based compensation awards		3					3
Payment of income tax withheld on vested restricted stock		(36)					(36)
Payment of income tax withheld on vested restricted stock, Shares	(2,000)
Balances at Dec. 31, 2015	$ 2	148,523	(7,922)	318,579		923	$ 460,105	[2]
Balances, Shares at Dec. 31, 2015	20,133,000						20,132,706
Net income				5,997		37	$ 6,034
Foreign currency translation adjustment			(815)				(815)
Disposal of subsidiary			605			$ (960)	(355)
Repurchase of common stock		(9,176)					(9,176)
Repurchase of common stock, Shares	(1,104,000)
Stock based compensation - options		1,292					1,292
Stock-based compensation - restricted stock		440					440
Stock-based compensation - restricted stock, Shares	31,000
Payment of income tax withheld on vested restricted stock		(21)					(21)
Payment of income tax withheld on vested restricted stock, Shares	(3,000)
Balances at Dec. 31, 2016	$ 2	$ 141,058	$ (8,132)	$ 324,576			$ 457,504
Balances, Shares at Dec. 31, 2016	19,057,000						19,057,217

[1] Amounts for the years ended December 31, 2015 and 2014 have been restated for immaterial corrections of identified errors relating to prepaid loan fees (see Note 2 (b) "Correction of Immaterial Errors").

[2] Amounts for the year ended December 31, 2015 have been restated for immaterial corrections of identified errors relating to prepaid loan fees (see Note 2 (b) "Correction of Immaterial Errors").