Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Class of Stock [Line Items]

Schedule of Repurchase Agreements [Table Text Block]

Monthly stock repurchases for the periods presented, all of which were purchased as part of a publicly announced plan or program, were as follows:

	Total Number of Shares Purchased	Average Price paid per Share		Approximate Dollar Value of Shares that May Yet be Purchased under the Program		Plan Expiration
May 1, 2018- May 30, 2018	1,190,420	$	3.89	$	15,366,000	February 28, 2019
Totals for 2018	1,190,420	$	3.89