CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock, at cost	Non-controlling interests
Balance at Dec. 31, 2015	$ 52,270	$ 25,413	$ 96,321	$ 369,270	$ 0	$ (440,026)	$ 1,292
Balance (in shares) at Dec. 31, 2015		25,413
Increase (Decrease) in Equity
Net income	18,892			18,494			398
Other comprehensive income, net of tax	699				699
Distributions to non-controlling interest holders	(448)						(448)
Share-based compensation expense	1,877		1,877
Exercise of stock options	366			(2,312)		2,678
Repurchase of shares	(11,691)					(11,691)
Balance at Mar. 31, 2016	61,965	$ 25,413	98,198	385,452	699	(449,039)	1,242
Balance (in shares) at Mar. 31, 2016		25,413
Balance at Dec. 31, 2016	62,194	$ 25,413	107,288	333,786	(1,745)	(403,953)	1,405
Balance (in shares) at Dec. 31, 2016		25,413
Increase (Decrease) in Equity
Net income	7,160			6,545			615
Other comprehensive income, net of tax	12,723				12,723
Distributions to non-controlling interest holders	(569)						(569)
Share-based compensation expense	695		695
Exercise of stock options	752			(2,872)		3,624
Repurchase of shares	(10,590)					(10,590)
Balance at Mar. 31, 2017	$ 72,365	$ 25,413	$ 108,915	$ 336,527	$ 10,978	$ (410,919)	$ 1,451
Balance (in shares) at Mar. 31, 2017		25,413