Investments (Tables)

12 Months Ended

Dec. 31, 2015

Investments [Abstract]

Schedule Of Carrying Amount And Maximum Loss Exposure Of Equity Investments [Table Text Block]

		2015		2014
LB Pipe JV equity method investment	$	5,246	$	5,746
Net investment in direct financing lease		995		1,117
	$	6,241	$	6,863

Schedule of Direct Financing Future Minimum Lease Payments for Capital Leases [Table Text Block]

		Minimum Lease Payments
2016	$	131
2017		140
2018		150
2019		574
	$	995