SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2017

Valuation and Qualifying Accounts [Abstract]

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS

	Balance at Beginning of Year		Charged to Expenses		Adjustments to Valuation Accounts		Deductions			Balance at End of Year
Year ended December 31, 2017:
Allowance for deferred tax asset	$	859	$	—	$	671	$	—		$	1,530
Allowance for uncollectible accounts	5,720		200		—		—			5,920
Allowance for notes receivable	—		—		—		—			—
Year ended December 31, 2016:
Allowance for deferred tax asset	—		—		859		—			859
Allowance for uncollectible accounts	7,451		—		—		(1,731		)	5,720
Allowance for notes receivable	—		—		—		—			—
Year ended December 31, 2015:
Allowance for deferred tax asset	—		—		—		—			—
Allowance for uncollectible accounts	5,952		1,499		—		—			7,451
Allowance for notes receivable	—		—		—		—			—