Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) - $ / shares	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (usd per share)	$ 0.0017	$ 0.0017
Common stock, shares authorized	16,000,000	16,000,000
Common stock, shares issued	8,318,000	8,242,000
Common stock, shares outstanding	6,993,000	7,386,000
Treasury stock, shares	1,325,000	856,000