Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Stockholders' equity:
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	12,113,109	12,028,354
Treasury stock, at cost	42,600	42,600