Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Investments All Other Investments [Abstract]

The following table summarizes our bond activity for the three months ended March 31, 2018 and the twelve months ended December 31, 2017 (in thousands):

	Three Months Ended			Twelve Months Ended
	March 31, 2018			December 31, 2017
Fair value at beginning of period	$	51,101		$	44,573
Purchases		6,170			15,546
Redemptions		—			(940	)
Maturities and calls		(3,345	)		(7,845	)
Change in bond premium		130			(160	)
Fair market value adjustment		(454	)		(73	)
Fair value at end of period	$	53,602		$	51,101

Summary of Outstanding Interest Rate Swaps

The following table summarizes our outstanding interest rate swaps and their classification in the accompanying Consolidated Balance Sheets at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	Notional		Fair
	Amount		Value		Balance Sheet Location
Interest rate swaps	$	55,000	$	1,637	Other non-current assets
Interest rate swaps	$	15,000	$	82	Other current assets
	December 31, 2017
	Notional		Fair
	Amount		Value		Balance Sheet Location
Interest rate swaps	$	55,000	$	1,055	Other non-current assets
Interest rate swaps	$	15,000	$	76	Other current assets

Under the terms of the interest rate swaps, we pay interest at a fixed rate of interest plus applicable margin as stated in the agreement, and receive interest that varies with the one-month LIBOR. The notional value, fixed rate of interest and expiration date of each interest rate swap is (i) $15 million – 1.155% - November 2018, (ii) $25 million – 1.300% - October 2020, (iii) $10 million – 1.120% - February 2021 and (iv) $20 million – 1.770% - May 2022. Refer to Note 10, Fair Value Measurements, for additional disclosures regarding fair value measurements.

Summary of Effects of Interest Rate Swap

The following table summarizes the effects of the interest rate swap on our accompanying Consolidated Statements of Comprehensive Income for the three months ended March 31, 2018 and 2017 (in thousands):

	Gain Recognized in AOCL, Net of Tax				(Loss) Gain Reclassified from AOCL into Expense
	Three Months Ended				Three Months Ended
	March 31,				March 31,
	2018		2017		2018			2017
Interest rate swap	$	450	$	93	$	(38	)	$	58