Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2015

Finite-Lived Intangible Assets [Line Items]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	2015
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	20	$	7,600	$	807	$	6,793
Tradename	6	7,400		2,620		4,780
Covenants not to compete	10	3,100		660		2,440
Real estate options	2.2	942		942		—
		$	19,042	$	5,029	$	14,013

	2014
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	20	$	7,600	$	428	$	7,172
Tradename	6	7,400		1,388		6,012
Covenants not to compete	10	3,100		351		2,749
Real estate options	2.2	942		495		447
		$	19,042	$	2,662	$	16,380

Schedule of Goodwill [Table Text Block]

Changes in carrying amount of goodwill were as follows:

	(in thousands)
Balance at January 1, 2014	98,686
Acquisition adjustments	1,526
Balance at December 31, 2014	100,212
Acquisition adjustments	—
Balance at December 31, 2015	$	100,212