Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Summary Of Significant Accounting Policies [Abstract]

Schedule Of Supplemental Disclosures Of Cash Flow Information

	2020		2019		2018
Cash paid during the year for:
Interest	$	13,049	$	13,297	$	15,005
Income taxes		4,122		1,944		1,699
Non-cash investing and financing activities:
Issuance of common stock for Ascyrus Acquisition	$	20,000	$	--	$	--
Assets acquired in exchange for operating leases		1,864		2,604		--

Schedule Of Depreciation Expense

	2020		2019		2018
Depreciation expense	$	6,948	$	7,467	$	7,303