Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table summarizes our financial assets and liabilities that are measured at fair value on a recurring basis and the fair value measurements, by level, within the fair value hierarchy as of September 30, 2018 and December 31, 2017:

			Fair Value Measurements Using:
As of September 30, 2018	Fair Value		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
(in thousands)
Assets:
Investments—equity securities	$	22	$	22	$	—	$	—
Investments—guaranteed income fund	679		—		—		679
Investments—mutual funds and other	7,250		7,250		—		—
Total investments	7,951		7,272		—		679
Derivative assets	10,568		—		10,568		—
Total assets	$	18,519	$	7,272	$	10,568	$	679
Liabilities:
Derivative liabilities	$	9,774	$	—	$	9,774	$	—

			Fair Value Measurements Using:
As of December 31, 2017	Fair Value		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
(in thousands)
Assets:
Investments—equity securities	$	22	$	22	$	—	$	—
Investments—guaranteed income fund	648		—		—		648
Investments—mutual funds and other	6,086		6,086		—		—
Total investments	6,756		6,108		—		648
Derivative assets	1,286		—		1,286		—
Total assets	$	8,042	$	6,108	$	1,286	$	648
Liabilities:
Derivative liabilities	$	6,247	$	—	$	6,247	$	—

Summary of Changes in Fair Value of Investments

The following table sets forth the summary of the changes in the fair value of Level 3 investments for the nine months ended September 30, 2018 and 2017:

	Nine Months Ended   September 30,
	2018			2017
(in thousands)
Beginning Balance	$	648		$	561
Purchases and adjustments	64			76
Transfers	(29		)	—
Distribution	(12		)	(2		)
Investment income	8			7
Ending Balance	$	679		$	642