Consolidated Statements of Shareholders' Equity (Unaudited) (Parentheticals) - USD ($) shares in Thousands, $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2018	Dec. 31, 2017
Retained Earnings [Member]
Dividends on common stock (in dollars per share)	$ 0.07	$ 0.12
Common Stock [Member]
Stock issued pursuant to public offering, issuance costs		$ 1.7
Unvested restricted shares (in shares)	71	74

Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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-Topic 505
-SubTopic 10
-Section 50
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Aggregate dividends paid during the period for each share of common stock outstanding.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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