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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Feb. 28, 2018	Dec. 31, 2017	Jan. 23, 2018	Jan. 09, 2018	Apr. 17, 2017
Subsequent event
Due date of debt instrument		Apr. 17, 2020
Texas Capital Credit Facility
Subsequent event
Maximum borrowing capacity					$ 20.0
Texas Capital Credit Facility | Subsequent event
Subsequent event
Maximum borrowing capacity				$ 22.0
Series A Preferred Stock | Wipro, LLC | Subsequent event
Subsequent event
Value of shares issued			$ 9.9
Percent of outstanding common stock issued upon conversion			16.00%
Shares issued			9,926
Percent of ownership required for non-voting observer position on Board of Directors			5.00%
Market price at issuance			$ 9.91
3Q Digital Inc | Subsequent event
Subsequent event
Contingent consideration fair value	$ 35.0
Proceeds from sale	5.0
Additional proceeds for sale of business	$ 5.0

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Percent of common stock that must be held to maintain seat on Board of Directors.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Expiration, mandatory redemption, or due date, in CCYY-MM-DD format, of the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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