Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
10.75% senior notes
Fair value of other financial instruments
Interest rate (as a percent)	10.75%	10.75%
Carrying Amount | 10.75% senior notes
Fair value of other financial instruments
Long-term debt	$ 200,000	$ 200,000
Carrying Amount | Senior secured Term Loan A
Fair value of other financial instruments
Long-term debt	161,888	170,625
Carrying Amount | Notes payable and other
Fair value of other financial instruments
Long-term debt	2,646	2,491
Fair Value | 10.75% senior notes
Fair value of other financial instruments
Long-term debt	223,250	221,000
Fair Value | Senior secured Term Loan A
Fair value of other financial instruments
Long-term debt	161,888	170,625
Fair Value | Notes payable and other
Fair value of other financial instruments
Long-term debt	$ 2,565	$ 2,410