Acquisitions (Details) (Pure Commerce Pty Ltd [Member], USD $) | 9 Months Ended | |
Sep. 30, 2013 | Jan. 04, 2013 |
Business Acquisition [Line Items] | | |
Business Acquisition, Purchase Price Allocation, Current Assets | | $4,818,000 |
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment | | 331,000 |
Business Acquisition, Purchase Price Allocation, Goodwill Amount | | 26,228,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | | 402,000 |
Business Acquisition, Purchase Price Allocation, Assets Acquired | | 65,058,000 |
Business Acquisition, Purchase Price Allocation, Current Liabilities | | -4,762,000 |
Business Acquisition, Purchase Price Allocation, Other Noncurrent Liabilities | | -2,028,000 |
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net | | 58,268,000 |
Business Acquisition, Cost of Acquired Entity, Cash Paid | 31,300,000 | |
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned | | 5,300,000 |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 224,425 | |
Contingent consideration obligation at fair value - date of acquisition | | 21,725,000 |
Customer Relationships [Member] | | |
Business Acquisition [Line Items] | | |
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets | | 18,230,000 |
Finite-Lived Intangible Asset, Useful Life | 12 years | |
Noncompete Agreements [Member] | | |
Business Acquisition [Line Items] | | |
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets | | 755,000 |
Finite-Lived Intangible Asset, Useful Life | 4 years | |
Trade Names [Member] | | |
Business Acquisition [Line Items] | | |
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets | | 2,382,000 |
Finite-Lived Intangible Asset, Useful Life | 20 years | |
Software Development [Member] | | |
Business Acquisition [Line Items] | | |
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets | | 11,912,000 |
Finite-Lived Intangible Asset, Useful Life | 10 years | |
Minimum [Member] | | |
Business Acquisition [Line Items] | | |
Property, Plant and Equipment, Useful Life | 2 years | |
Maximum [Member] | | |
Business Acquisition [Line Items] | | |
Property, Plant and Equipment, Useful Life | 8 years | |
Australia, Dollars | | |
Business Acquisition [Line Items] | | |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low | | 0 |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | | $30,000,000 |