Label	Element	Value
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	us-gaap_ValuationAllowancesAndReservesBalance	$ 8,500,000	[1]

[1] Upon adoption of ASC 606, permanent placement fallouts of $1.5 million were reclassified from allowance from doubtful accounts to other current liabilities, effective January 1, 2018.