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Income Taxes (Details 2) (USD $) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Gross Deferred Tax Assets: |  |  |  |
Bad debt reserve |  | $ 6,426,000 | $ 4,573,000 |
Accrued and other shared-based compensation |  | 21,393,000 | 14,909,000 |
Accrued expenses |  | 10,032,000 | 2,069,000 |
Unrealized derivative losses |  | 558,000 | 316,000 |
Customer deposits |  | 5,149,000 | 7,545,000 |
Unrealized foreign exchange |  | 6,082,000 | 914,000 |
Total gross deferred tax assets |  | 50,414,000 | 31,001,000 |
Gross deferred tax assets, net of valuation allowance |  | 50,414,000 | 31,001,000 |
Deferred Tax Liabilities: |  |  |  |
Depreciation |  | (19,199,000) | (11,999,000) |
Goodwill and intangible assets |  | (28,099,000) | (23,108,000) |
Prepaid expenses, deductible for tax purposes |  | (3,452,000) | (1,719,000) |
Other |  | (740,000) | (1,330,000) |
Gross deferred tax liabilities |  | (51,490,000) | (38,156,000) |
Net deferred tax liabilities |  | (1,076,000) | (7,155,000) |
Reported on the consolidated balance sheets as: |  |  |  |
Other current assets for deferred tax assets, current |  | 32,118,000 | 15,282,000 |
Identifiable intangible and other non-current assets for deferred tax assets, non-current |  | 16,342,000 | 5,406,000 |
Accrued expenses and other current liabilities for deferred tax liabilities, current |  | 3,229,000 | 6,084,000 |
Non-current income tax liabilities, net for deferred tax liabilities, non-current |  | 46,307,000 | 21,759,000 |
Income taxes |  |  |  |
Net operating loss carryforward |  | 774,000 | 675,000 |
Foreign net operating losses |  | 2,600,000 | 2,800,000 |
Foreign tax credits |  | 0 | 0 |
Annual capital in excess of par value pool of windfall income tax benefits related to employee compensation |  | 3,300,000 | 3,700,000 | 6,000,000
Period applicable for additional special income tax concession | 5 years |  |  |
Decrease in foreign income taxes due to special income tax concession in Singapore |  | 6,200,000 | 5,500,000 | 8,400,000
Impact of income tax concession on diluted earnings per common share (in dollars per share) |  | $ 0.09 | $ 0.08 | $ 0.12
December 31, 2014 |  |  |  |
Income taxes |  |  |  |
Net operating loss carryforward |  | 74,000 |  |
December 31, 2021 |  |  |  |
Income taxes |  |  |  |
Net operating loss carryforward |  | 76,000 |  |
December 31, 2022 |  |  |  |
Income taxes |  |  |  |
Net operating loss carryforward |  | 455,000 |  |
Indefinite |  |  |  |
Income taxes |  |  |  |
Net operating loss carryforward |  | $ 169,000 |  |

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