Consolidated Statement Of Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Balance, value at Dec. 31, 2013	$ 471,749	$ 311	$ 243,389	$ 236,449	$ (3,585)	$ (4,815)
Balance, shares at Dec. 31, 2013		31,131				395
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	13,885	0	0	13,885	0	0
Stock compensation expense	2,379	0	2,379	0	0	0
Excess tax benefit from stock compensation	99	0	99	0	0	0
Stock options exercised, shares		44				0
Stock options exercised, value	509	1	508	0	0	0
Issuance of restricted stock, shares		22				0
Issuance of restricted stock, value	0	0	0	0	0	0
Net settlement of restricted stock units, shares		121				29
Net settlement of restricted stock units, value	(505)	1	(1)	0	0	(505)
Total other comprehensive loss	(2,276)	0	0	0	(2,276)	0
Balance, value at Sep. 30, 2014	$ 485,840	$ 313	$ 246,374	$ 250,334	$ (5,861)	$ (5,320)
Balance, shares at Sep. 30, 2014		31,318				424