Basis of Presentation and Significant Accounting Policies (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2016

Dec. 31, 2015

Accounting Policies [Abstract]

Changes in Company's Allowance for Accounts Receivable

The changes in the Company’s allowance for accounts receivable were as follows for the periods ended (in thousands):

	Three Months Ended March 31,
	2016			2015
Beginning balance	$	3,541		$	3,373
Provision for doubtful accounts		3,980			3,557
Write-offs and adjustments		(4,499	)		(4,022	)
Balance at end of period	$	3,022		$	2,908

The changes in the Company’s allowance for accounts receivable were as follows for the periods ended (in thousands):

	Year ended December 31,
	2015			2014			2013
Beginning balance	$	3,373		$	1,901		$	2,301
Provision for doubtful accounts		14,924			15,656			10,360
Write-offs and adjustments		(14,756	)		(14,184	)		(10,760	)
Balance at end of period	$	3,541		$	3,373		$	1,901