Acquisition (Tables)

9 Months Ended

Sep. 30, 2017

Business Combinations [Abstract]

Allocation of purchase price to assets and liabilities acquired

	Preliminary Fair Value Estimated as of Acquisition Date
Assets acquired:
Current assets	$	62,902
Goodwill	263,155
Intangible assets	156,000
Noncurrent assets	3,615
Total assets	485,672
Liabilities assumed:
Current liabilities	72,397
Noncurrent liabilities	46,706
Total liabilities	119,103
Fair value of net assets acquired, net of cash	$	366,569