XML 103 R74.htm IDEA: XBRL DOCUMENT
v3.19.1

Debt - Senior Notes - Amendments (Details) - Unsecured Senior Notes - USD ($) | Mar. 31, 2017 | Apr. 19, 2018 | Dec. 31, 2017 | Feb. 01, 2017 | Dec. 31, 2016 | Apr. 01, 2016 | Dec. 31, 2015 | Nov. 02, 2015 | Apr. 29, 2015
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt covenant, permitted indebtedness |  |  |  | $ 135,000,000 |  | $ 145,000,000 |  | $ 125,000,000 |
Debt instrument, interest rate |  |  |  |  |  | 6.50% |  |  | 5.50%
Consent fee | $ 200,000 |  | $ 200,000 |  | $ 300,000.0 | $ 300,000 | $ 0 |  |
Legal fees | $ 100,000 |  |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Consent fee |  | $ 300,000 |  |  |  |  |  |  |
Interest rate if Form 10-K is filed on or before September 30, 2018 |  | 7.50% |  |  |  |  |  |  |
Interest rate if Form 10-K has not been filed on or before September 30, 2018 |  | 8.50% |  |  |  |  |  |  |
Interest rate subsequent to Form 10-K filing |  | 7.50% |  |  |  |  |  |  |

X
- Definition Debt Instrument, Covenant, Permitted Indebtedness + References No definition available. + Details
Name: | psix_DebtInstrumentCovenantPermittedIndebtedness
Namespace Prefix: | psix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument, Interest Rate, Stated Percentage, Form 10-K Filed By Specified Date + References No definition available. + Details
Name: | psix_DebtInstrumentInterestRateStatedPercentageForm10KFiledBySpecifiedDate
Namespace Prefix: | psix_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument, Interest Rate, Stated Percentage, Form 10-K Not Filed By Specified Date + References No definition available. + Details
Name: | psix_DebtInstrumentInterestRateStatedPercentageForm10KNotFiledBySpecifiedDate
Namespace Prefix: | psix_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument, Interest Rate, Stated Percentage, Subsequent To Form 10-K Filing + References No definition available. + Details
Name: | psix_DebtInstrumentInterestRateStatedPercentageSubsequentToForm10KFiling
Namespace Prefix: | psix_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of the fee that accompanies borrowing money under the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentFeeAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
Name: | us-gaap_LegalFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |