The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireProductiveAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Subsequent Events - Narrative (Details) - USD ($)		6 Months Ended
Subsequent Events - Narrative (Details) - USD ($)	Jul. 25, 2019	Jun. 30, 2019	Jun. 30, 2018
Subsequent Event [Line Items]
Payments to acquire assets		$ 46,517,000	$ 43,429,000
New Geothermal Lagoon Attraction \| Pursuit \| Geothermal Lagoon ehf \| Subsequent Event
Subsequent Event [Line Items]
Percentage of controlling interest	51.00%
Payments to acquire assets	$ 13,200