CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]
Balance at Dec. 31, 2013	$ 253,272	$ 308	$ 135,653	$ (138,688)	$ 29	$ 255,970
Balance (shares) at Dec. 31, 2013		30,758
Purchase of treasury stock, at cost	(13,884)	0	0	(13,884)	0	0
Exercise of stock options	163	0	(114)	277	0	0
Income tax benefit from stock-based compensation, net	(163)	0	(163)	0	0	0
Stock-based compensation expense	2,400	0	377	2,023	0	0
Other	318	0	85	233	0	0
Dividends paid	(4,351)	0	0	0	0	(4,351)
Unrealized loss on marketable securities, net of tax	(3)	0	0	0	(3)	0
Net income	9,564	0	0	0	0	9,564
Balance at Mar. 31, 2014	$ 247,316	$ 308	$ 135,838	$ (150,039)	$ 26	$ 261,183
Balance (shares) at Mar. 31, 2014		30,758