Revenue Recognition - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract asset, impairment charge	$ 0
Discount percentage	2.00%
Standard payment term	30 days
Percentage of discount accrued at time of sale	100.00%
GPO billing period	30 days
Capitalized contract acquisition costs		$ 1,500,000
Capitalized contract costs, amortization	$ 0
Capitalized contract costs, impairment loss	$ 0
Collection and processing services
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Available financing period, option one	6 months
Available financing period, option two	12 months
Storage service
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Minimum prepayment term	18 years
Accounting Standards Update 2014-09 | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle			$ 1,100,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Rebate payment term	1 month
Product return term	3 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Rebate payment term	3 months
Product return term	5 years