Debt (Details) (USD $)	1 Months Ended	3 Months Ended			3 Months Ended		3 Months Ended			0 Months Ended				3 Months Ended
	May 25, 2011	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Olympic [Member]	May 25, 2011 Canadian Lender [Member]	Mar. 31, 2013 9½% Senior Notes [Member]	Mar. 20, 2013 9½% Senior Notes [Member]	Dec. 31, 2012 9½% Senior Notes [Member]	Mar. 20, 2013 9.75% Senior Notes [Member]	Mar. 31, 2013 9.75% Senior Notes [Member]	Dec. 31, 2012 9.75% Senior Notes [Member]	Feb. 14, 2007 9.75% Senior Notes [Member]	Mar. 31, 2013 Maximum [Member] 9½% Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes		$ 250,000,000		$ 275,000,000			$ 250,000,000	$ 250,000,000	$ 0		$ 0	$ 275,000,000
Interest rate of senior notes								9.50%					9.75%
Cash on hand used to repurchase Senior Notes										29,800,000
Cash paid for accrued interest										4,800,000
Interest rate increase							0.25							1.0
Aggregate principal amount that may be redeemed on or before April 15, 2016 using net proceeds of equity offerings							35.00%
Call premium using net proceeds of equity offerings							109.50%
Call premium upon a change in control							101.00%
Call premium										100.00%
Amount redeemed of senior notes										275,000,000
Credit Facility		0		0
Notes payable to former executive		12,000		29,000
Debt, Long-term and Short-term, Combined Amount		250,012,000		275,029,000
Loss on early extinguishment of debt		1,504,000	0
Credit Facility
Maximum borrowing capacity	30,000,000					5,000,000
Expiration date of credit facility	May 25, 2016
Percent of present and future assets and equity used as guarantee					65.00%
Notes Payable to Former Executive
Monthly payment of non-interest bearing note		$ 6,000