Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

			Fair Value Measurements at June 30, 2017
	Total			Using Fair Value Hierarchy
Assets	Fair Value			Level 1		Level 2		Level 3
Company-owned life insurance	$	1,489		$	—	$	1,489	$	—
Total	$	1,489		$	—	$	1,489	$	—

			Fair Value Measurements at December 31, 2016
	Total			Using Fair Value Hierarchy
Assets	Fair Value			Level 1		Level 2		Level 3
Company-owned life insurance	$	1,410		$	—	$	1,410	$	—
Total	$	1,410		$	—	$	1,410	$	—