Summary of Significant Accounting Policies (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Advertising expenses
Advertising expenses incurred	$ 1,815	$ 2,718	$ 2,805
Recurring | Level 2
Assets:
Other assets	491
Total Assets	491
Liabilities:
Long term debt	110,566	122,709
Other non-current liabilities -
Interest rate swap	544	621
Total Liabilities	$ 111,110	$ 123,330