CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Treasury Stock
Balance at Dec. 31, 2013	$ 502,439	$ 936	$ 296,517	$ 250,000	$ (45,014)
Balance (in shares) at Dec. 31, 2013		93,826,453			6,526,305
Increase (Decrease) in Shareholders' Equity
Net income and comprehensive income	3,353			3,353
Stock-based compensation expense	2,940		2,940
Exercise of stock options	2,532	2	2,530
Exercise of stock options (in shares)		261,833
Vesting of restricted stock awards and units, net of shares withheld for employee tax	(1,088)	1	(1,089)
Vesting of restricted stock awards and units, net of shares withheld for employee tax (in shares)		102,136
Excess tax benefit from exercise of stock options	854		854
Balance at Mar. 31, 2014	$ 511,030	$ 939	$ 301,752	$ 253,353	$ (45,014)
Balance (in shares) at Mar. 31, 2014		94,190,422			6,526,305