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Organization and Summary of Significant Accounting Policies (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Apr. 30, 2015
Accounting Policies [Line Items] |  |  |  |
Depreciation and amortization | $ 15,000,000 | $ 12,800,000 | $ 11,300,000 |
Vendor-Specific Objective Evidence (VSOE) exist when (approximately 80% or more) standalone sales are within a reasonable price range | 80.00% |  |  |
Transferred non-recourse accounts receivables | $ 28,700,000 | 38,600,000 | 62,000,000 |
Accounts receivables from third-party leasing companies for transferred non-recourse accounts receivables | 200,000 | 800,000 | 1,100,000 |
Commissions expense | 22,000,000 | 13,700,000 | 14,000,000 |
Wells Fargo Bank, National Association |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Debt issuance cost, gross | $ 7,949,000 |  |  |
Internal use software and development costs |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Useful life | 5 years |  |  |
Software and development costs to be sold |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Cost of revenues for amortization of capitalized software development cost | $ 7,100,000 | 5,800,000 | 4,400,000 |
Minimum |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Vendor-Specific Objective Evidence, within a reasonably narrow price range (plus or minus of median rate) | 15.00% |  |  |
Estimated useful lives of assets | 1 year |  |  |
Minimum | Computer Equipment [Member] |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Useful life | 3 years |  |  |
Minimum | Furniture and Fixtures |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Useful life | 5 years |  |  |
Minimum | Equipment |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Useful life | 3 years |  |  |
Maximum |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Vendor-Specific Objective Evidence, within a reasonably narrow price range (plus or minus of median rate) | 15.00% |  |  |
Estimated useful lives of assets | 30 years |  |  |
Maximum | Computer Equipment [Member] |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Useful life | 5 years |  |  |
Maximum | Furniture and Fixtures |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Useful life | 7 years |  |  |
Maximum | Equipment |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Useful life | 12 years |  |  |
Selling, general and administrative |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Shipping and handling expenses | $ 12,100,000 | 8,500,000 | 7,400,000 |
Capitalized software costs included in property and equipment | Internal use software and development costs |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Software development costs capitalized | 2,200,000 | 1,200,000 |  |
Capitalized software costs included in other assets | Software and development costs to be sold |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Software development costs capitalized | 14,300,000 | 12,100,000 |  |
Primary Supplier |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Minimum supplier purchase obligations | $ 0 |  |  |
Notice of termination, time upon delivery | 2 months |  |  |
Payments to suppliers | $ 47,900,000 | $ 41,700,000 | $ 34,500,000 |
Credit Concentration Risk | Lease Receivable |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Percentage of lease receivable balance | 45.00% |  |  |
Avantec Heathcare Limited |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Percentage of interest acquired |  |  |  | 85.00%

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