Organization and Summary of Significant Accounting Policies (Earning Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounting Policies [Abstract]
Income (loss) from continuing operations, net of tax	$ 5,179	$ 59,124	$ 6,417	$ (1,586)	$ 3,740	$ 15,904	$ 13,488	$ 11,118	$ 69,134	$ 44,250	$ 38,551
Basic (in shares)									16,426,209	16,035,882	15,800,913
Weighted Average Number Diluted Shares Outstanding Adjustment									564,949	701,829,000	204,749,000
Diluted (in shares)									16,991,158	16,737,711	16,005,662
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.31	$ 3.60	$ 0.40	$ (0.10)	$ 0.23	$ 0.98	$ 0.85	$ 0.70	$ 4.21	$ 2.76	$ 2.44
Income (Loss) from Continuing Operations, Per Diluted Share									$ 4.07	$ 2.64	$ 2.41