Property and Equipment |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2017 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Property, Plant and Equipment [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Property, Plant and Equipment Disclosure [Text Block] |
2. Property and Equipment
Property and equipment consisted of the following at December 31, 2017 and 2016 (in thousands):
Depreciation and amortization expense was $417,000, $377,000 and $358,000 for the years ended December 31, 2017, 2016 and 2015, respectively. |