Schedule II - Consolidated Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

Schedule II

SCHEDULE II - CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS

(in thousands)			Additions
Description	Balance at beginning of period		Charged to costs and expenses		Transferred from (to) allowance for accounts / notes receivable		(1) Deductions			Balance at end of period
Allowance for doubtful accounts receivable - Year ended December 31,
2016	$	6,938	$	1,191	$	—	$	(423	)	$	7,706
2015	4,644		3,302		—		(1,008		)	6,938
2014	4,993		1,183		—		(1,532		)	4,644

(1) Uncollectible accounts written off, net of recoveries and adjustments to estimates for the allowance accounts.