XML 49 R40.htm IDEA: XBRL DOCUMENT v3.21.2

Stock-Based Compensation Plans and Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of performance incentive plans

The following is a summary of the status of the Company’s equity-classified iPIP plans and changes during the six months ended June 30, 2021.

​	​	​	​	​
​	​	iPIP Investment Pool
​		2019-2020		2021-2022
Points at beginning of period		97.40		—
Granted	​	—	​	94.75
Forfeited		(2.20)		(10.00)
Points at end of period		95.20		84.75

The following is a summary of the status of the Company’s liability-classified iPIP plans and changes during the six months ended June 30, 2021.

​	​	​	​	​	​	​
​	​	iPIP Investment Pool
​		2013‑2014		2015‑2016		2017‑2018
Points at beginning of period		80.17		70.40		73.34
Granted	​	—	​	—	​	2.00
Points at end of period		80.17		70.40		75.34

Schedule of restricted stock units activity

​	​	​
Nonvested at beginning of period	​	531
Granted	​	331
Vested	​	(112)
Forfeited	​	(32)
Nonvested at end of period		718

X

- Definition

Schedule Of Share-Based Compensation, Performance Incentive Plans, Activity [Table Text Block]

+ References

No definition available.

+ Details

Name:	star_ScheduleOfShareBasedCompensationPerformanceIncentivePlansActivityTableTextBlock
Namespace Prefix:	star_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the changes in outstanding nonvested restricted stock units.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration