The increase during the period in capital lease obligations due to entering into new capital leases.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

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

Lease Commitments - Additional Information (Detail)	12 Months Ended
Lease Commitments - Additional Information (Detail)	Dec. 31, 2018 USD ($) Hospital	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Leases Disclosure [Line Items]
Number of hospital facilities \| Hospital	3
Additional capital lease obligations incurred \| $	$ 0	$ 0	$ 152,000
Two Hospital Facilities
Leases Disclosure [Line Items]
Lease Expiration Term	2021
Third Hospital Facilities
Leases Disclosure [Line Items]
Lease Expiration Term	2026