Summary of Significant Accounting Policies (Details) - Summary of the allowance for uncollectible accounts - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Summary of the allowance for uncollectible accounts [Abstract]
Balance at beginning of year	$ 559	$ 168
Provisions	305	437
Deductions	(825)	(46)
Balance at end of year	$ 39	$ 559