Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Summary of Significant Accounting Policies [Abstract]

Allowance for Obsolescent Inventory

The components of the allowance for inventory obsolescence are set forth below (in thousands):

	Balance Beginning of Year		Additions Charge to Costs and Expense		Recoveries			Balance End of Year
Year Ended December 31, 2016	$	1,457	$	215	$	--		$	1,672
Year Ended December 31, 2015	$	1,366	$	92	$	(1	)	$	1,457
Year Ended December 31, 2014	$	417	$	1,359	$	(410	)	$	1,366

Property and Equipment Useful Lives

Buildings	20   Years
Machinery and equipment	3-5   Years
Office furniture and fixtures	5   Years
Leasehold improvements	Lesser of life of lease or useful life of asset