Fair Value Measurements (Schedule of Changes in the Fair Value Measurement of Contingent Obligation using Significant Unobservable Inputs) (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period					$ 1,250,000
Total gains or losses for the period:
Non-cash gain on change in fair value of contingent obligation included in general and administrative expense	(369,000)				(589,000)
Balance, End of Period	661,000				661,000
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	1,030,000		2,150,000		1,250,000		2,150,000
Total gains or losses for the period:
Non-cash gain on change in fair value of contingent obligation included in general and administrative expense	(369,000)	[1]		[1]	(589,000)	[1]		[1]
Balance, End of Period	$ 661,000		$ 2,150,000		$ 661,000		$ 2,150,000

[1] The Company assesses the estimated fair value of the contingent obligation on a quarterly basis using a probability weighted income approach (discounted cash flow) valuation technique. When preparing discounted cash flow models under the income approach, the Company uses internal forecasts to estimate future cash flows. The Company's internal forecasts are developed using observable (Level 2) and unobservable (Level 3) inputs. For the three and six months ended June 30, 2013, the Company measured the fair value of its contingent obligation and recorded a non-cash gain fair value adjustment of approximately $0.4 million and $0.6 million, respectively, to reflect a reduction in fair value of its contingent obligation. The principal factor affecting the reduction in fair value is due to lower client implementations than anticipated. There were no significant changes in discount rate used the calculation of fair value. The potential payout of consideration for the year ending 2013 is up to $1.5 million of face value of the contingent obligation.