XML 42 R29.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Supplemental Cash Flow Information (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
Supplemental Cash Flow Elements [Abstract] |
Components of supplemental cash flow information | Supplemental cash flow information is as follows (in thousands):
| Nine months ended September 30,
| 2018 |  | 2017
Supplemental non-cash investing and financing activities: |  |  |
Value of common stock issued in payment of accrued liability | $ | — |  |  | $ | 188 |
Exercise of stock options by common stock surrender | — |  |  | 5,863 |
Supplemental cash payment information: |  |  |
Interest paid | $ | 1,645 |  |  | $ | 1,511 |
Income taxes paid, net of refunds (received, net of payments) | 16 |  |  | (10,081 | )

X
- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowElementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration