Reverse Recapitalization - Narrative (Details)			3 Months Ended
	May 08, 2026 shares	Sep. 24, 2025 USD ($) tranche $ / shares shares	Sep. 30, 2025 USD ($)	Jun. 30, 2026 $ / shares shares	Dec. 31, 2025 shares	Sep. 23, 2025 shares	Sep. 22, 2025 $ / shares shares	Sep. 15, 2025 USD ($)
Schedule Of Reverse Recapitalization [Line Items]
Recapitalization exchange ratio		0.66
Common stock, outstanding (in shares)		174,957,000		194,173,000	175,440,000
Reverse recapitalization, consideration received | $		$ 171,200,000
Proceeds from issuance of Series A cumulative redeemable convertible preferred stock | $		145,000,000.0
Proceeds from the reverse recapitalization, net of transaction costs | $		26,200,000
Reverse recapitalization, transaction costs, expensed | $		$ 3,200,000
New shares issued during period (in shares)	15,384,609
NRA Warrants
Schedule Of Reverse Recapitalization [Line Items]
Warrant exercise price (in dollars per share) | $ / shares				$ 6.00
Public Warrants
Schedule Of Reverse Recapitalization [Line Items]
Warrant exercise price (in dollars per share) | $ / shares				9.28
Number of shares called by each warrant (in shares)		1
Private Placement Warrants
Schedule Of Reverse Recapitalization [Line Items]
Warrant exercise price (in dollars per share) | $ / shares				$ 9.28
Number of shares called by each warrant (in shares)		1
Legacy Kodiak
Schedule Of Reverse Recapitalization [Line Items]
Reverse recapitalization, transaction costs | $		$ 32,000,000.0
AACT
Schedule Of Reverse Recapitalization [Line Items]
Common stock, outstanding (in shares)						49,360,000
Intangible assets, net (including goodwill) | $		$ 0
AACT | Redeemable Warrants of AACT
Schedule Of Reverse Recapitalization [Line Items]
Warrant outstanding (in shares)		24,999,987
AACT | Private Placement Warrants
Schedule Of Reverse Recapitalization [Line Items]
Warrant outstanding (in shares)		14,300,000
Cumulative redeemable convertible preferred stock
Schedule Of Reverse Recapitalization [Line Items]
Preferred stock, convertible, conversion ratio		1
Series A Cumulative Convertible Preferred Stock
Schedule Of Reverse Recapitalization [Line Items]
Temporary equity, carrying amount, period decrease | $		$ 6,000,000.0
Common Stock Additional Paid-In Capital | Additional Paid-In Capital
Schedule Of Reverse Recapitalization [Line Items]
Conversion of redeemable convertible preferred stock in connection with reverse recapitalization | $		$ 22,800,000
NRA Shares
Schedule Of Reverse Recapitalization [Line Items]
Shares converted, recapitalization (in shares)		368,000
Sponsor Earn Out Securities
Schedule Of Reverse Recapitalization [Line Items]
New shares issued during period (in shares)		6,250,000
Reverse recapitalization, contingent consideration, (in shares)		6,250,000		6,250,000	6,250,000
Sponsor Earn Out Securities | Triggering Event I Threshold
Schedule Of Reverse Recapitalization [Line Items]
Sale of stock, price per share (in dollars per share) | $ / shares		$ 18.00
Contingent consideration, stock price, trading days, minimum (in days)		20 days
Contingent consideration, stock price, consecutive trading day period (in days)		30 days
Contingent consideration, earn out period (in years)		4 years
Legacy Kodiak Advisor Shares
Schedule Of Reverse Recapitalization [Line Items]
Shares converted, recapitalization (in shares)		1,092,000
Earn Out Securities
Schedule Of Reverse Recapitalization [Line Items]
Reverse recapitalization, contingent consideration, (in shares)		74,998,317
Number of tranches | tranche		3
Earn Out Securities | Triggering Event I
Schedule Of Reverse Recapitalization [Line Items]
Reverse recapitalization, contingent consideration, (in shares)		24,999,439
Sale of stock, price per share (in dollars per share) | $ / shares		$ 18.00
Contingent consideration, stock price, trading days, minimum (in days)		20 days
Contingent consideration, stock price, consecutive trading day period (in days)		30 days
Earn Out Securities | Triggering Event II
Schedule Of Reverse Recapitalization [Line Items]
Reverse recapitalization, contingent consideration, (in shares)		24,999,439
Sale of stock, price per share (in dollars per share) | $ / shares		$ 23.00
Contingent consideration, stock price, trading days, minimum (in days)		20 days
Contingent consideration, stock price, consecutive trading day period (in days)		30 days
Earn Out Securities | Triggering Event III
Schedule Of Reverse Recapitalization [Line Items]
Reverse recapitalization, contingent consideration, (in shares)		24,999,439
Sale of stock, price per share (in dollars per share) | $ / shares		$ 28.00
Contingent consideration, stock price, trading days, minimum (in days)		20 days
Contingent consideration, stock price, consecutive trading day period (in days)		30 days
Affiliate of AACT | 2025 Simple Agreements For Future Equity
Schedule Of Reverse Recapitalization [Line Items]
SAFE agreement, amount exchanged | $		$ 10,000,000.0
Publicly held shares of AACT | Common stock, par value $0.0001 per share
Schedule Of Reverse Recapitalization [Line Items]
Common stock, outstanding (in shares)		5,492,904
Preferred Investors
Schedule Of Reverse Recapitalization [Line Items]
Proceeds from issuance of preferred stock and warrants | $		$ 145,000,000.0
Preferred Investors | 2025 PIPE Warrants
Schedule Of Reverse Recapitalization [Line Items]
Percentage of warrant to purchase (in percent)		125.00%
Warrant exercise price (in dollars per share) | $ / shares		$ 12.00
Warrants issued during period (in shares)		17,769,375
Preferred Investors | AACT
Schedule Of Reverse Recapitalization [Line Items]
Subscription agreement, aggregate purchase price | $								$ 145,000,000.0
Preferred Investors | Series A Cumulative Convertible Preferred Stock
Schedule Of Reverse Recapitalization [Line Items]
Par value (in dollars per share) | $ / shares		$ 0.0001
Stated value (in dollars per share) | $ / shares		$ 1,200
Series A redeemable convertible preferred stock issued in connection with reverse recapitalization, net (in shares)		142,155
Non Redemption Investors | NRA Warrants
Schedule Of Reverse Recapitalization [Line Items]
Warrants issued during period (in shares)		7,606,666
Loss on issuance of warrants | $			$ 37,000,000.0
Non Redemption Investors | AACT & Legacy Kodiak
Schedule Of Reverse Recapitalization [Line Items]
Non-redemption agreement, shares that can't be redeemed (in shares)							3,319,712
Non Redemption Investors | NRA Shares
Schedule Of Reverse Recapitalization [Line Items]
New shares issued during period (in shares)		368,028
Loss on issuance of common stock | $			$ 3,200,000
Non Redemption Investors | NRA Shares | NRA Warrants
Schedule Of Reverse Recapitalization [Line Items]
Warrant exercise price (in dollars per share) | $ / shares							$ 12.00
Ares Acquisition Holdings II LP | Class a Ordinary shares of AACT
Schedule Of Reverse Recapitalization [Line Items]
Common stock, outstanding (in shares)		12,500,000
Ares Acquisition Holdings II LP | Sponsor Earn Out Securities
Schedule Of Reverse Recapitalization [Line Items]
Shares converted, recapitalization (in shares)		12,500,000
Advisor of Legacy Kodiak | Legacy Kodiak Advisor Shares
Schedule Of Reverse Recapitalization [Line Items]
Stock issued during period for services (in shares)		1,091,519
Stock issued during period for services | $		$ 12,500,000