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Revenue Recognition - Summary of Impact of Adoption of the New Standard to Previously Reported Selected Financial Statement Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Gross revenues		$ 105,883
Net revenues	$ 214,789	105,883
Operating income	16,681	5,318
Net income	$ 3,930	5,342
Accounting Standards Update 2014-09 | As Reported
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Gross revenues		112,135
Promotional allowances		(5,489)
Net revenues		106,646
Operating income		5,318
Net income		5,342
Accounting Standards Update 2014-09 | Adjustments
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Gross revenues		(6,252)
Promotional allowances		5,489
Net revenues		$ (763)

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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