Consolidated Balance Sheets [Parenthetical] (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accounts and other receivables, allowance for doubtful accounts (in dollars)	$ 1,756	$ 1,015
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	35,000,000	35,000,000
Common Stock, Shares, Issued	19,175,006	18,822,139
Treasury Stock, Shares	125,334	26,639