Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies [Abstract]

Rollforward of the Reserve for Air Quality Testing Program

A rollforward of the reserve for the Company’s air quality testing program was as follows:

	2016		2015
Balance at January 1	$	809	$	-
Provision		6,187		10,873
Reversal		-		(1,428)
Payments		(5,496)		(8,636)
Balance at December 31	$	1,500	$	809