Supplemental Cash Flow Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Information [Abstract]
Estimated federal income taxes paid	$ 3,000,000	$ 0	$ 0
Income Taxes Receivable	3,251,000
Accrued distribution to noncontrolling interest	504,000	504,000
Cash paid for state income taxes	516,000	771,000	185,000
Foreign withholding taxes	$ 4,605,000	$ 11,890,000	$ 7,586,000