The minimum number of payment card brands certifying each of the entity's high-security facilities.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

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Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period.

+ References

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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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- Definition

The cash outflow for reacquisition of callable preferred stock.

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- Definition

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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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Amount of cash paid related to share-based compensation liabilities.

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Per share or per unit amount of equity securities issued.

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No definition available.

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Number of new stock issued during the period.

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Number of stock bought back by the entity at the exercise price or redemption price.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Business (Details) $ / shares in Units, $ in Thousands						3 Months Ended	12 Months Ended
Business (Details) $ / shares in Units, $ in Thousands	Dec. 20, 2017	Dec. 18, 2017	Oct. 15, 2015 USD ($) $ / shares shares	Aug. 17, 2015 USD ($) shares	Jan. 12, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 item	Dec. 31, 2015 USD ($) shares
Proceeds from sale of asset								$ 5,000
Facility contract termination costs								$ 681
Reverse stock split	0.20	0.20					0.20
Minimum Number of Payment Card Brands Providing Certification \| item							1
First Lien Credit Facility \| Term Loan
Maximum borrowing capacity				$ 435,000
Repayment of outstanding term loan			$ 112,500			$ 10,000
First Lien Credit Facility \| Revolving Credit Facility
Maximum borrowing capacity				40,000
Senior Term Loan
Repayment of outstanding term loan				$ 158,420
Series A Preferred Stock
Shares redeemed \| shares			2,576	62,140				64,809
Total redemption value			$ 11,877	$ 276,688				$ 288,565
IPO
Shares issued (in shares) \| shares			3,000,000
IPO price per share \| $ / shares			$ 50.00
Deferred Offering expenses			$ 7,196
IPO \| Phantom Stock Plan
Liability settled for outstanding obligation under Phantom Stock Plan			13,268
IPO \| First Lien Credit Facility \| Term Loan
Repayment of outstanding term loan			112,500
IPO \| Series A Preferred Stock
Total redemption value			$ 11,877
Nevada \| Sold
Proceeds from sale of asset					$ 5,000
Petersfield, United Kingdom
Facility contract termination costs								$ 681