Nature of Operations and Basis of Consolidation Cash, Cash Equivalents, and Restricted Cash (Tables)

3 Months Ended

Mar. 31, 2018

Cash, Cash Equivalents, and Restricted Cash [Abstract]

Cash and Cash Equivalents Disclosure [Text Block]

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows (in thousands):

	March 31, 2018		December 31, 2017		March 31, 2017		December 31, 2016		December 31, 2015
Cash and cash equivalents	$	4,742	$	8,473	$	12,433	$	5,079	$	11,980
Restricted cash	6,158		3,556		4,852		4,426		6,634
Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows	$	10,900	$	12,029	$	17,285	$	9,505	$	18,614

Restricted cash consists primarily of funds held in trust accounts to satisfy the requirements of certain stipulation agreements and insurance reserve requirements.