Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of Short-term and Long-term Debt

The Company’s short-term and long-term debt at December 31, 2017 and 2016 consisted of the following:

	December 31,
(in thousands)	2017		2016
Short-term debt - non-recourse	$	—	$	—
Short-term debt - recourse	22,000		29,000
Total short-term debt	$	22,000	$	29,000
Current maturities of long-term debt – non-recourse	$	—	$	—
Current maturities of long-term debt – recourse	54,205		47,545
Total current maturities of long-term debt	$	54,205	$	47,545
Long-term debt, less current maturities – non-recourse	$	—	$	—
Long-term debt, less current maturities – recourse	418,339		397,065
Total long-term debt, less current maturities	$	418,339	$	397,065

Schedule of Short-term Borrowings

The following information relates to short-term borrowings:

(in thousands, except percentages)	2017			2016			2015
Maximum amount borrowed	$	367,000		$	412,000		$	308,500
Weighted average interest rate	2.56		%	1.94		%	1.64		%

Schedule of Long-term Debt

Long-term debt consists of the following:

	December 31,
(in thousands, except percentages)	2017		2016
Note payable, 4.07%, payable at maturity, due 2021	$	26,000	$	26,000
Notes payable, 3.72%, paid 2017	—		25,000
Note payable, 4.55%, payable at maturity, due 2023	24,000		24,000
Note payable, 4.85%, payable at maturity, due 2026	25,000		25,000
Note payable, 6.78%, payable at maturity, due 2018	41,500		41,500
Note payable, 4.92%, payable in increasing amounts ($2.2 million for 2017), plus interest, due 2021 (a)	18,241		20,443
Note payable, 4.76%, payable in increasing amounts ($2.1 million for 2017) plus interest, due 2028 (a)	45,936		47,990
Note payable, variable rate (3.86% at December 31, 2017), payable in increasing amounts ($1.4 million for 2017) plus interest, due 2023 (a)	17,786		19,179
Note payable, 3.29%, payable in increasing amounts ($1.3 million for 2017) plus interest, due 2022 (a)	20,293		21,619
Note payable, 4.23%, payable quarterly in varying amounts ($0.7 million for 2017) plus interest, due 2021 (a)	10,479		11,136
Notes payable, variable rate, paid 2017	—		8,790
Note payable, variable rate (3.23% at December 31, 2017), payable in varying amounts ($0.3 million for 2017), plus interest, due 2026 (a)	8,762		9,016
Note payable, 4.76%, payable quarterly in varying amounts ($0.4 million for 2017) plus interest, due 2028 (a)	8,581		8,956
Note payable, 3.03%, payable at maturity, due 2022	100,000		30,000
Note payable, 3.33%, payable in increasing amounts ($1.0 million for 2017) plus interest, due 2025 (a)	25,960		27,000
Note payable, 4.5%, payable at maturity, due 2030	16,000		16,000
Note payable, 5.0%, payable at maturity, due 2040	14,000		14,000
Industrial development revenue bonds:
Note payable, variable rate, paid 2017	—		6,513
Variable rate (2.97% at December 31, 2017), payable at maturity, due 2024 (a)	14,500		—
Variable rate (3.33% at December 31, 2017), payable at maturity, due 2019 (a)	4,650		4,650
Variable rate (3.33% at December 31, 2017), payable at maturity, due 2025 (a)	3,100		3,100
Variable rate (3.25% at December 31, 2017), payable at maturity, due 2036	21,000		21,000
Debenture bonds, 2.65% to 5.00%, due 2018 through 2032	30,432		36,931
	$	476,220	$	447,823
Less: current maturities	54,205		47,545
Less: unamortized prepaid debt issuance costs	3,676		3,213
	$	418,339	$	397,065

(a) Debt is collateralized by first mortgages on certain facilities and related equipment or other assets with a book value of $159.9 million