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Capitalized Software (Details) (USD $)	3 Months Ended		9 Months Ended
Capitalized Software (Details) (USD $)	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Research and Development [Abstract]
Capitalized software	$ 91,291,000		$ 91,291,000		$ 83,432,000
Less: Impairment on capitalized software	0		0		(8,715,000)
Less: Accumulated amortization	(59,733,000)		(59,733,000)		(48,422,000)
Capitalized software, net	31,558,000		31,558,000		26,295,000
Amortization computer software expense	$ 4,021,000	$ 3,347,000	$ 11,313,000	$ 9,845,000

For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.