Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The following table provides a reconciliation of the Level 3 earn-out liability measured at estimated fair value based on an initial valuation and updated quarterly for the years ended December 31, 2018 and 2017 (in thousands):



	Earn-out Liability
Contingent earn-out liability, January 1, 2017	$	—
Acquisition date fair value estimate of earn-out	19,000
Change in fair value of contingent earn-out (included in income from operations as a separate line item)	8,000
Contingent earn-out liability, December 31, 2017	27,000
Change in fair value of contingent earn-out (included in income from operations as a separate line item)	20,400
Contingent earn-out liability, December 31, 2018	$	47,400

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

The following table provides quantitative information about Level 3 inputs for fair value measurement of our earn-out liability as of the acquisition date to December 31, 2018. Significant increases or decreases in these inputs in isolation could result in a significant impact on our fair value measurement:



Simulation Input	As of December 31, 2018		As of December 31, 2017		At Acquisition February 3, 2017
Adjusted EBITDA Volatility	30.00	%	26.00	%	29.00	%
WACC	8.25	%	8.75	%	10.00	%
20-year risk free rate	2.87	%	2.58	%	2.82	%
Market price of risk	5.24	%	5.99	%	6.93	%
Cost of debt	5.25	%	4.08	%	4.16	%

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Our assets and liabilities measured at fair value on a recurring basis consisted of the following (Level 1, 2 and 3 inputs as defined above) (in thousands):



	Fair value measurements at December 31, 2018
	Total carrying value		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)
Assets:
Available for sale securities:
Short-term	$	37,329	$	—	$	37,329	$	—
Long-term	2,025		—		2,025		—
Foreign exchange forwards:
Prepaid expenses and other current assets	187		—		187		—
Other assets	545		—		545		—
Total Assets	$	40,086	$	—	$	40,086	$	—

Liabilities:

Earn-out liability	$	47,400	$	—	$	—	$	47,400
Total Liabilities	$	47,400	$	—	$	—	$	47,400



	Fair value measurements at December 31, 2017
	Total carrying value		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)
Assets:
Available for sale securities:
Short-term	$	10,061	$	—	$	10,061	$	—
Long-term	14,579		—		14,579		—
Total Assets	$	24,640	$	—	$	24,640	$	—

Liabilities:

Earn-out liability	$	27,000	$	—	$	—	$	27,000
Foreign exchange forwards:
Accrued liabilities	187		—		187		—
Other long-term liabilities	402		—		402		—
Total Liabilities	$	27,589	$	—	$	589	$	27,000

Fair Value Measurements, Nonrecurring [Table Text Block]

Our assets measured at fair value on a nonrecurring basis consisted of the following (Level 1, 2 and 3 inputs as defined above (in thousands):



	Fair value measurements at December 31, 2017
	Total carrying value		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)
Assets:
Assets held-for-sale	$	12,489	$	—	$	—	$	12,489
Total Assets	$	12,489	$	—	$	—	$	12,489