Consolidated Statement Of Changes In Stockholders' Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2013	$ 24	$ 129,961	$ (3,681)	$ 70,479	$ 196,783
Balance, shares at Dec. 31, 2013	23,626,642
Comprehensive income				9,290	9,290
Share-based compensation costs		1,154			1,154
Stock option exercises, including tax effects		308			308
Stock option exercises, including tax effects, shares	18,125				18,125
Treasury stock purchases			(2,701)		(2,701)
Treasury stock purchases, shares	(103,500)
Balance at Jun. 17, 2014	$ 24	$ 131,423	$ (6,382)	$ 79,769	$ 204,834
Balance, shares at Jun. 17, 2014	23,541,267